{ "model": { "rank": 12496, "code": "thing-q809758", "model_id": "vr.tr.basal-cell-carcinoma-of-the-skin", "name": "basal-cell carcinoma of the skin", "purpose": "Let an agent explain basal cell carcinoma in general terms, relay prevention, warning signs and treatment information from dermatology bodies, distinguish it from other skin cancers, and route personal skin changes and treatment questions to clinicians.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.STA", "industry": "", "version": "", "url": "/models/thing/q809758/", "tier": 2, "score": 39, "payload": { "layer": "wikidata", "aliases": [ "infundibulocystic basal cell carcinoma", "sebaceous basal cell carcinoma", "Rombo syndrome", "penis basal cell carcinoma", "scrotum basal cell carcinoma", "metatypical basal cell carcinoma", "anal margin basal cell carcinoma", "external ear basal cell carcinoma", "adamantinoid basal cell epithelioma", "fibroepithelial basal cell carcinoma", "morpheaform basal cell carcinoma", "clear cell basal cell carcinoma", "adenoid basal cell carcinoma", "follicular basal cell carcinoma", "vulva basal cell carcinoma", "sarcomatoid basal cell carcinoma", "signet ring basal cell carcinoma", "basosquamous carcinoma", "basaloid squamous cell carcinoma", "nodular basal cell carcinoma", "pigmented basal cell carcinoma", "micronodular basal cell carcinoma", "infiltrative basal cell carcinoma", "superficial basal cell carcinoma", "cystic basal cell carcinoma", "prostate basal cell carcinoma", "fibroepithelioma of Pinkus", "Fibroepithelioma of Pinkus", "salivary gland basal cell adenocarcinoma" ], "aliasCount": 29, "merged": 29, "knownIn": 39, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q809758", "url": "https://www.wikidata.org/wiki/Q809758", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T21:17:39Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 3, "engine": "claude" }, "metaModel": { "id": "THING-Q809758", "registryId": "vr.tr.basal-cell-carcinoma-of-the-skin", "name": "basal-cell carcinoma of the skin", "version": "0.2.0-wave.3", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.STA" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q809758/", "model": { "registry_id": "vr.tr.basal-cell-carcinoma-of-the-skin", "name": "basal-cell carcinoma of the skin", "purpose": "Let an agent explain basal cell carcinoma in general terms, relay prevention, warning signs and treatment information from dermatology bodies, distinguish it from other skin cancers, and route personal skin changes and treatment questions to clinicians.", "definition": "The most common form of skin cancer, arising from basal cells of the epidermis on sun-exposed skin, especially the face, in fair-skinned and older people; it grows slowly, rarely spreads, but can invade and destroy local tissue if untreated, and is cured in most cases by surgical removal or other local treatments.", "what_it_is_for": "Not applicable; a cancer.", "affordances": [ "explain the cancer and its course", "relay prevention and warning signs", "relay treatment options in general terms", "route personal questions to clinicians" ], "distinguishing_features": [ "Arises from basal cells", "Ultraviolet exposure as main cause", "Local invasion, very rare spread", "High cure rate" ], "appearance": "A pearly or waxy bump, a flat scar-like patch, or a sore that bleeds and does not heal, usually on the face or other sun-exposed skin.", "visual_identification": [ "Slow-growing skin lesion on sun-exposed skin", "Pearly, translucent or ulcerated forms", "Melanoma and squamous cell carcinoma are other skin cancers with different behaviour" ], "physical_properties": [ { "quantity": "share of skin cancers", "typical_range": "about 70-80", "unit": "percent", "note": "of non-melanoma skin cancers" }, { "quantity": "metastasis", "typical_range": "under 0.1", "unit": "percent", "note": "very rare" } ], "families_and_kinds": [ "nodular basal cell carcinoma", "superficial basal cell carcinoma", "morphoeic or infiltrative forms", "pigmented and rarer histological variants", "genetic syndromes with multiple basal cell carcinomas" ], "related_models": [ { "relation": "is a kind of", "target": "skin carcinoma", "why": "the category" }, { "relation": "is caused by", "target": "ultraviolet radiation", "why": "the main cause" }, { "relation": "is confused with", "target": "melanoma", "why": "a more dangerous skin cancer" }, { "relation": "is treated by", "target": "dermatology", "why": "the specialty" } ], "identifiers": [ { "scheme": "ICD-10", "value_or_pattern": "C44", "note": "other malignant neoplasms of skin" }, { "scheme": "ICD-O-3", "value_or_pattern": "8090/3", "note": "basal cell carcinoma" } ], "standards_and_regulation": [ "Dermatology guidelines on diagnosis and treatment", "Sun protection public health guidance", "Cancer registration rules" ], "failure_modes_and_hazards": [ "Local destruction if neglected", "Recurrence after treatment", "Misdiagnosis as benign lesion", "Agents giving personal medical advice" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What it is.", "rationale": "General information.", "layers": [ { "id": "nature", "name": "Nature", "description": "Nature and cause.", "findings": [ { "id": "nature-finding", "name": "Nature", "description": "Nature.", "questions": [ { "text": "What is basal cell carcinoma, what causes it, and how does it behave?", "kind": "definition" }, { "text": "Is the user describing a skin change of their own, which needs a clinician?", "kind": "boundary" } ] } ] }, { "id": "recognise", "name": "Recognise", "description": "Recognition.", "findings": [ { "id": "recognise-finding", "name": "Recognise", "description": "Recognise.", "questions": [ { "text": "What does it look like, and how does it differ from melanoma and squamous cell carcinoma?", "kind": "definition" }, { "text": "Which entry fits melanoma?", "kind": "action" } ] } ] } ] }, { "id": "prevent", "name": "Prevent", "description": "Prevention.", "rationale": "Public health.", "layers": [ { "id": "sun", "name": "Sun", "description": "Sun protection.", "findings": [ { "id": "sun-finding", "name": "Sun", "description": "Sun.", "questions": [ { "text": "What sun protection guidance do health bodies give?", "kind": "provenance" }, { "text": "Which entry fits sun protection?", "kind": "action" } ] } ] }, { "id": "checks", "name": "Checks", "description": "Skin checks.", "findings": [ { "id": "checks-finding", "name": "Checks", "description": "Checks.", "questions": [ { "text": "What do guidelines say about skin self-examination and screening?", "kind": "provenance" }, { "text": "Which entry fits skin cancer screening?", "kind": "action" } ] } ] } ] }, { "id": "treat", "name": "Treat", "description": "Diagnosis and treatment.", "rationale": "Clinical.", "layers": [ { "id": "diagnosis", "name": "Diagnosis", "description": "Diagnosis.", "findings": [ { "id": "diagnosis-finding", "name": "Diagnosis", "description": "Diagnosis.", "questions": [ { "text": "How is basal cell carcinoma diagnosed, in general terms?", "kind": "provenance" }, { "text": "Which entry fits skin biopsy?", "kind": "action" } ] } ] }, { "id": "treatment", "name": "Treatment", "description": "Treatment.", "findings": [ { "id": "treatment-finding", "name": "Treatment", "description": "Treatment.", "questions": [ { "text": "What treatments do guidelines describe, from surgery to topical and radiation options?", "kind": "provenance" }, { "text": "Is the presentation free of personal treatment advice?", "kind": "boundary" } ] } ] } ] }, { "id": "study", "name": "Study", "description": "Epidemiology and research.", "rationale": "Study.", "layers": [ { "id": "epidemiology", "name": "Epidemiology", "description": "Incidence.", "findings": [ { "id": "epidemiology-finding", "name": "Epidemiology", "description": "Epidemiology.", "questions": [ { "text": "How common is it, and how is incidence changing, with sources?", "kind": "measurement" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] }, { "id": "research", "name": "Research", "description": "Research.", "findings": [ { "id": "research-finding", "name": "Research", "description": "Research.", "questions": [ { "text": "What research exists on genetics and new treatments, with attribution?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Should histological variants be separate entries?", "How should guidelines be linked?", "The registry entry has merged aliases for rare variants and a syndrome; should they be split off?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a basal-cell carcinoma of the skin, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain basal cell carcinoma in general terms, relay prevention, warning signs and treatment information from dermatology bodies, distinguish it from other skin cancers, and route personal skin changes and treatment questions to clinicians.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: infundibulocystic basal cell carcinoma, sebaceous basal cell carcinoma, Rombo syndrome, penis basal cell carcinoma, scrotum basal cell carcinoma, metatypical basal cell carcinoma, anal margin basal cell carcinoma, external ear basal cell carcinoma, adamantinoid basal cell epithelioma, fibroepithelial basal cell carcinoma, morpheaform basal cell carcinoma, clear cell basal cell carcinoma.", "29 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 39 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a basal-cell carcinoma of the skin, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "infundibulocystic basal cell carcinoma", "sebaceous basal cell carcinoma", "Rombo syndrome", "penis basal cell carcinoma", "scrotum basal cell carcinoma", "metatypical basal cell carcinoma", "anal margin basal cell carcinoma", "external ear basal cell carcinoma", "adamantinoid basal cell epithelioma", "fibroepithelial basal cell carcinoma", "morpheaform basal cell carcinoma", "clear cell basal cell carcinoma" ] } ], "standing": "Described in 39 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 29 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one basal-cell carcinoma of the skin from another, and a basal-cell carcinoma of the skin from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a basal-cell carcinoma of the skin, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a basal-cell carcinoma of the skin, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a basal-cell carcinoma of the skin is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a basal-cell carcinoma of the skin, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a basal-cell carcinoma of the skin, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a basal-cell carcinoma of the skin is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a basal-cell carcinoma of the skin sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a basal-cell carcinoma of the skin, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a basal-cell carcinoma of the skin, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a basal-cell carcinoma of the skin is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a basal-cell carcinoma of the skin from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a basal-cell carcinoma of the skin, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a basal-cell carcinoma of the skin, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a basal-cell carcinoma of the skin is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a basal-cell carcinoma of the skin passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a basal-cell carcinoma of the skin between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a basal-cell carcinoma of the skin, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a basal-cell carcinoma of the skin, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a basal-cell carcinoma of the skin is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a basal-cell carcinoma of the skin, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a basal-cell carcinoma of the skin is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a basal-cell carcinoma of the skin, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a basal-cell carcinoma of the skin, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a basal-cell carcinoma of the skin is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What basal-cell carcinoma of the skin is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of basal-cell carcinoma of the skin are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is basal-cell carcinoma of the skin operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of basal-cell carcinoma of the skin and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of basal-cell carcinoma of the skin?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as basal-cell carcinoma of the skin?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a basal-cell carcinoma of the skin came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a basal-cell carcinoma of the skin and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a basal-cell carcinoma of the skin, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a basal-cell carcinoma of the skin, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a basal-cell carcinoma of the skin is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a basal-cell carcinoma of the skin is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a basal-cell carcinoma of the skin, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a basal-cell carcinoma of the skin, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a basal-cell carcinoma of the skin is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }