lesion
Let an agent explain lesions in general terms, relay classification, examples and description from clinical sources, describe the named forms, route concerning lesions to medical assessment, and distinguish lesions from symptoms, tumours as a subset, normal variants and artefacts, without diagnosing individuals.
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.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain lesions in general terms, relay classification, examples and description from clinical sources, describe the named forms, route concerning lesions to medical assessment, and distinguish lesions from symptoms, tumours as a subset, normal variants and artefacts, without diagnosing individuals.
Any abnormal change or damage in a tissue or organ due to disease or injury, from wounds and ulcers to tumours and areas of infection, described by location, appearance and cause; forms the registry aliases name include skin lesions, mouth lesions, the brown tumour of bone seen in hyperparathyroidism, skip lesions that leave healthy tissue between affected areas as in Crohn disease, and pseudotumours and pseudocysts, which mimic tumours or cysts without being true ones. Lesions are findings that need clinical interpretation, and new, changing, bleeding or non-healing lesions, especially of the skin, should be assessed by a doctor.
What it is for: Not applicable; a clinical finding.
It can be explain classification; relay examples and description; describe named forms; route concerning lesions.
Distinguishing features
Abnormal tissue change
Described systematically
Many causes
A finding, not a diagnosis
What it looks like
Varied; from a red skin patch or ulcer to a mass seen on imaging.
Physical character
description axes: site, size, shape, colour, margin list
skip lesions: characteristic of Crohn disease note
registry parents: physiological damage, clinical sign note
How it is recognised
Abnormal change or damage in tissue
Brown tumor, lesions in mouth, skin lesion, pseudotumor, pseudocyst, skip lesion
Symptoms are what a person feels; tumours are a kind of lesion; normal variants are not damage; artefacts are imaging errors
Related models
is a kind of - in registry terms
includes -
is contrasted with -
is contrasted with - subset
In practice
Families and kinds
skin lesions
oral lesions
bone lesions such as brown tumour
space-occupying lesions
pseudotumours and pseudocysts
Standards and regulation
Clinical description and imaging reporting standards
Failure modes and hazards
Missing skin cancer in changing lesions
Overinterpreting benign findings
Self-diagnosis from images
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: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What a lesion is.
Science.
Definition
Definition.
Definition
Definition.
- Is there a new, changing, bleeding or non-healing skin lesion, or a mouth lesion lasting more than a few weeks, in which case see a doctor for assessment? boundary
- What is a lesion, and how does it differ from symptoms, tumours, normal variants and imaging artefacts? definition
Forms
Named forms.
Forms
Forms.
- What are skin and mouth lesions, brown tumour, skip lesions and pseudotumours and pseudocysts? definition
- Which entry fits the specific form? action
Description Description.
Science.
Axes
Describing lesions.
Axes
Axes.
- How are lesions described by site, size, shape and margin? provenance
- Which references are standard? provenance
Imaging
Imaging lesions.
Imaging
Imaging.
- How are lesions characterised on imaging? provenance
- Which sources are cited? provenance
Examples Examples.
Science.
Skin
Skin lesions.
Skin
Skin.
- What primary and secondary skin lesions do dermatologists describe? provenance
- Which entry fits skin condition? action
Skip lesions
Skip lesions.
Skip lesions
Skip lesions.
- Why are skip lesions typical of Crohn disease? provenance
- Is the information accurate? boundary
Context Care.
Attribution.
Warning signs
When to seek care.
Warning signs
Warning signs.
- What lesion features prompt medical review, such as the ABCDE rule for moles? provenance
- Which entry fits melanoma? action
Mimics
Pseudotumours.
Mimics
Mimics.
- Why do pseudotumours and pseudocysts mimic real lesions? provenance
- Is the presentation neutral and attributed? boundary
What the second pass must settle
- Should skin lesions be a separate entry?
- How should lesion description standards be linked?
- Should pseudotumour be clarified?