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General Pathology — Neoplasia and Paraneoplastic Disease

Record #38 · Edit the content, source and classification relationships.

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Additional Insight #38

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Content

Malignancy is defined by biological behaviour rather than merely rapid growth; invasion, metastatic potential, cytological atypia, loss of polarity and abnormal mitoses collectively indicate malignant behaviour.
A paraneoplastic syndrome is conceptually separate from tumour bulk and metastasis: its manifestations are not explained by direct invasion, distant deposits or the normal hormonal product of the tissue of origin.
Tumour markers are associations rather than stand-alone diagnoses and should be interpreted in the context of tumour type.
Marker overlap is important: hCG and AFP can both be relevant to non-seminomatous germ-cell tumours, so a one-marker–one-tumour rule is unsafe.
Cancer predisposition can arise through distinct mechanisms including persistent viral infection, chronic inflammatory or metaplastic states, environmental exposure and prenatal drug exposure.
Neuromuscular presentations may be remote manifestations of malignancy: Lambert–Eaton syndrome points towards small-cell lung carcinoma whereas myasthenia gravis is classically associated with thymoma.

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7ad4cca6-a563-47b8-b428-a58c4eb1bacf

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Classification Relationships — through Subtopic3

4 assigned

Obstetrics and Gynaecology→ Basic→ Pathology→ General→ Neoplasia→ Cancer associations→ Paraneoplastic

Obstetrics and Gynaecology→ Basic→ Pathology→ General→ Neoplasia→ Cancer associations→ Predisposing factors

Obstetrics and Gynaecology→ Basic→ Pathology→ General→ Neoplasia→ Tumour biology→ Benign and malignant

Obstetrics and Gynaecology→ Basic→ Pathology→ General→ Neoplasia→ Tumour markers→ Markers

General Pathology — Neoplasia and Paraneoplastic Disease

Additional Insight #38

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Classification Relationships — through Subtopic3

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