parathyroid
Enable an AI agent to recognise parathyroid gland tissue, record its anatomical and endocrine state, and identify what evidence and clinical authority are needed before acting on it.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an AI agent to recognise parathyroid gland tissue, record its anatomical and endocrine state, and identify what evidence and clinical authority are needed before acting on it.
A parathyroid gland is a small endocrine organ, usually situated behind the thyroid gland, whose chief cells secrete parathyroid hormone to regulate calcium and phosphate balance.
It can be Reconcile gland identities across anatomical descriptions, imaging, operative records, and pathology.; Record suspected or confirmed parathyroid tissue while retaining competing identifications.; Compare hormone and mineral measurements over time with their assay and physiological context.; Separate host-level endocrine disturbance from evidence implicating a particular gland.; Prepare an evidence summary for clinician review before sampling, removal, preservation, or transplantation decisions.; Track tissue disposition and functional follow-up after an intervention..
Distinguishing features
The referent is glandular tissue or an endocrine organ, rather than the circulating hormone it produces.
Anatomical proximity to the thyroid does not establish thyroid identity; parathyroid identification requires appropriate anatomical, pathological, or other clinical evidence.
An individual gland must be distinguished from the host's entire parathyroid gland complement, especially when attributing hormone production or dysfunction.
A suspected parathyroid lesion must be distinguishable from a thyroid nodule, lymph node, or other nearby tissue, with identification confidence recorded.
Parathyroid names an organ type, not a species or an individual organism; host species is contextual information.
Scope
+ Identity of an individual parathyroid gland, tissue fragment, or explicitly defined gland group
+ Gland number, location, anatomical variation, and relationships to nearby structures
+ Parathyroid tissue composition and evidence of tissue identity
+ Parathyroid hormone secretion and its relationship to the host's mineral regulation
+ Structural abnormalities, functional disturbance, and uncertainty about the responsible gland
+ Gland preservation, sampling, removal, or transplantation history
- Whole-organism taxonomy, life history, habitat, and conservation status
- Thyroid gland structure and thyroid hormone regulation
- Parathyroid hormone as a separately modelled molecular substance or medicine
- Complete models of hyperparathyroidism, hypoparathyroidism, and parathyroid neoplasms
- Whole-body bone, kidney, and gastrointestinal physiology
- Clinical treatment protocols and operative technique
Characteristics
- Referent level
- organ type | individual gland | gland group | tissue fragment | graft Prevents whole-host functional findings from being assigned to an individual gland without evidence.
- Host and biological context
- host identifier, species, and relevant developmental or clinical context Makes the applicability of anatomical expectations and laboratory interpretation explicit.
- Anatomical location
- side, anatomical compartment, landmarks, and observed relationship to the thyroid Supports gland identification and comparison across imaging, surgery, and pathology.
- Gland complement
- number of suspected, confirmed, removed, and remaining glands, recorded separately Distinguishes incomplete observation from a demonstrated anatomical count.
- Gland dimensions
- mm for dimensions; mg or g for specimen mass; method and date required Supports structural comparison while preserving differences between imaging estimates and specimen measurements.
- Tissue identity confidence
- suspected | supported | confirmed | indeterminate; evidence basis required Prevents an unverified neck lesion from being treated as established parathyroid tissue.
- Parathyroid hormone context
- assay-reported concentration and unit, assay type, reference interval, sample time, and sampling site Makes hormone results interpretable and separates systemic measurements from evidence about one gland.
- Calcium and mineral context
- ionized or total calcium, albumin where relevant, phosphate, magnesium, renal function, and vitamin D measures with original units and timestamps Provides context for interpreting hormone secretion without treating a single result as a gland diagnosis.
- Structural and functional assessment
- separate recorded assessments of morphology and function, each with attribution, date, evidence, and uncertainty Avoids equating an enlarged gland with demonstrated excessive secretion.
- Intervention and continuity
- linked preservation, biopsy, excision, transplantation, and follow-up events Maintains tissue identity and host functional context when a gland is sampled, moved, or removed.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 17 findings · 27 questions.
Parathyroid identity Establishes what the parathyroid referent is and how its tissue identity is supported.
The registry name can otherwise conflate an organ type, one gland, all glands, and a suspected lesion.
Referent and host
Separates the organ concept from host-associated gland and tissue instances.
Gland-level boundary
Record whether observations concern one gland, a defined group, a fragment, or a graft.
- Does this record describe the parathyroid organ type, a particular gland, or a defined collection of glands or tissue? definition
- Which host and species does the tissue belong to, and which observations apply only at host level? boundary
Tissue identification
Captures the evidence distinguishing parathyroid tissue from neighbouring tissues.
Identity evidence
Keep suspected identification separate from confirmation and preserve the supporting report.
- What anatomical, imaging, operative, or pathological evidence supports parathyroid identity? provenance
- Have thyroid tissue, a lymph node, or another lesion been excluded, or do they remain plausible alternatives? boundary
Gland anatomy Describes gland distribution, location, morphology, and anatomical variation.
A gland must remain identifiable despite variation in position, incomplete detection, and differences between examination methods.
Distribution and position
Maps observed glands and distinguishes anatomical expectations from confirmed observations.
Gland map
Record a separately traceable location and detection status for each suspected or confirmed gland.
- How many glands have actually been identified, and by which examinations or procedures? measurement
- Where is each gland relative to the thyroid and other landmarks, and is any unusual location demonstrated or merely suspected? measurement
Morphology and microstructure
Records macroscopic and tissue-level observations without converting them automatically into diagnoses.
Structural description
Describe dimensions, composition, and focal or diffuse changes with their measurement basis.
- What dimensions or specimen mass were measured, when, and using which method? measurement
- What cellular composition, architecture, or focal abnormality does an available pathology report describe? provenance
Endocrine function Relates parathyroid hormone measurements to mineral regulation and the limits of gland-specific attribution.
Parathyroid function cannot be judged reliably from anatomical appearance or an isolated hormone result.
Hormone observation
Preserves assay, timing, and sampling information for parathyroid hormone measurements.
PTH measurement context
Associate each hormone result with its original laboratory context and anatomical attribution limits.
- Which parathyroid hormone assay, unit, reference interval, sampling site, and collection time apply to this result? measurement
- Does the result describe systemic secretion, or is there evidence linking it to a particular gland? boundary
Mineral feedback context
Links hormone observations to contemporaneous biochemical and physiological evidence.
Paired biochemical evidence
Record calcium status and relevant modifiers before interpreting the hormone response.
- What calcium measurement accompanies the hormone result, and was it ionized calcium, total calcium, or a derived value? measurement
- What renal function, vitamin D, phosphate, magnesium, medication, or recent intervention context must the interpreting clinician consider? boundary
Abnormality and attribution Separates structural findings, endocrine disturbance, lesion classification, and unresolved causal attribution.
A visible lesion, an abnormal hormone result, and a tissue diagnosis are different kinds of evidence.
Functional disturbance
Captures documented functional assessments and their scope.
Function assessment basis
Record the clinician's assessment of parathyroid function alongside evidence and unresolved explanations.
- What functional disturbance has been documented, by whom, and on the basis of which repeated or paired measurements? provenance
- Is the disturbance attributed to one gland, multiple glands, loss of functioning tissue, or an unresolved cause? boundary
Lesion classification
Preserves distinctions between imaging suspicion and pathological classification.
Lesion status and certainty
Record the reported lesion category without inferring it from size or localization alone.
- What lesion classification is recorded, and does it come from imaging, operative assessment, or pathology? provenance
- Which distinctions remain unresolved, including focal versus multigland involvement or benign versus malignant classification? boundary
Clinical handling and continuity Connects proposed and completed gland interventions with evidence, authority, tissue identity, and follow-up.
Handling a gland can change both its anatomical identity and the host's remaining endocrine function.
Intervention readiness
Organises information needed for a qualified clinician to evaluate a gland-directed action.
Gland-directed action review
Link an intended action to its target, clinical rationale, localization evidence, and responsible clinician.
- Which gland or tissue is the intended target, and what evidence connects that target to the stated clinical purpose? boundary
- What clinician authorisation, consent, and unresolved evidence requirements apply before the proposed action can proceed? action
Post-intervention continuity
Tracks preserved, removed, sampled, and transplanted tissue alongside subsequent functional observations.
Tissue fate and follow-up
Maintain links between the original gland, specimens or grafts, and follow-up evidence.
- What tissue was preserved, sampled, removed, or transplanted, and which specimen identifiers or graft locations preserve its identity? provenance
- What follow-up hormone and calcium observations are available, and what further monitoring has the responsible clinician specified? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- The unqualified name is interpreted as the parathyroid gland, with human anatomy as the default; it denotes an organ, not an organism or taxon.
- Gland count, location and mass vary between individuals; the measurements are approximate anatomical descriptions, not diagnostic thresholds.
- This account is recalled knowledge without source verification; comparative anatomy and exact terminology should be checked before publication.
- Which of these check these first hold for the sense of parathyroid this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Superior parathyroid glands
- Inferior parathyroid glands
- Ectopic parathyroid glands
- Supernumerary parathyroid glands
- Which of these kinds and varieties hold for the sense of parathyroid this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Terminologia Anatomica - Glandula parathyroidea - Anatomical terminology maintained by the Federative International Programme for Anatomical Terminology; superior and inferior glands are distinguished.
- Which of these identifiers and schemes hold for the sense of parathyroid this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Maintains extracellular calcium balance through secretion of parathyroid hormone.
- Examined when investigating disorders of calcium and phosphate metabolism.
- Localized before surgery for selected forms of hyperparathyroidism.
- Identified and preserved, together with their blood supply, during thyroid and other neck operations.
- Which of these real-world use hold for the sense of parathyroid this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Number of glands in a human - Usually 4; anatomical variation occurs - glands
- Mass of an individual normal adult human gland - Approximately 30-50 - mg
- Which of these typical measurements hold for the sense of parathyroid this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Excess parathyroid hormone secretion, commonly associated with adenoma or glandular hyperplasia, can cause hypercalcemia and skeletal or renal complications.
- Loss, injury or impaired blood supply during neck surgery can cause hypoparathyroidism and hypocalcemia.
- Chronic kidney disease can drive secondary hyperparathyroidism through disturbances of mineral metabolism.
- Ectopic or supernumerary glands can complicate localization and surgical treatment.
- Parathyroid carcinoma is a rare malignant disease that may produce substantial hormone excess.
- Which of these failure modes and hazards hold for the sense of parathyroid this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- thyroid gland - The thyroid is a distinct adjacent endocrine organ that produces thyroid hormones and calcitonin; parathyroid glands produce parathyroid hormone.
- parathyroid hormone - The hormone is a secreted signaling molecule; the parathyroid gland is the organ that produces it.
- parathyroid adenoma - An adenoma is a benign neoplasm arising from parathyroid tissue, rather than the normal gland.
- hyperparathyroidism - Hyperparathyroidism is a disorder of excessive hormone secretion, rather than an anatomical organ.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of parathyroid this model covers, and on what evidence? provenance
What the second pass must settle
- Does vr.tr.parathyroid intend human parathyroid glands specifically, or a comparative organ concept spanning multiple host taxa?
- Which anatomical references should establish species-specific expectations for gland number, development, location, and tissue composition?
- What evidence standards should distinguish suspected from confirmed parathyroid tissue across imaging, operative observation, and pathology?
- Which authoritative clinical references should govern assay interpretation and functional classification, including relevant age, renal, and treatment contexts?
- Does an existing Vercy world model already own this organ concept, and which neighbouring models should own its hormones, disorders, and clinical procedures?