pseudotumor

pseudotumor /pseu·do·tu·mor/ (-too´mer) an enlargement that resembles a tumor, resulting from inflammation, fluid accumulation, or other causes.

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pseudotumor ce´rebri  cerebral edema and raised intracranial pressure without neurological signs except occasional sixth nerve palsy.

inflammatory pseudotumor  a tumorlike mass representing an inflammatory reaction.

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pseu·do·tu·mor (sd-tmr)

n.

1. A nonneoplastic enlargement that resembles a true neoplasm.

2. A circumscribed fibrous exudate of inflammatory origin. Also called pseudoneoplasm.

3. A condition characterized by cerebral edema with narrowed small ventricles but with increased intracranial pressure and frequently with papilledema, commonly associated with obesity in females between the ages of 13 and 40.

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pseudotumor

[-t(y)o̅o̅′mər]

Etymology: Gk, pseudes + L, tumor, swelling

a false tumor.

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pseudotumor

phantom tumor.

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pseudotumor cerebri

cerebral edema and raised intracranial pressure without neurological signs except occasional sixth cranial nerve palsy.

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pseudotumor

Any circumscribed, nonneoplastic tumor-like mass–eg, gastric inflammatory fibroid polyps, a wad of helminths–eg, Strongyloides species–seen in Uganda, 'amyloidomas', endometriomas or other mass lesions. See Inflammatory pseudotumor. Cf Tumor Ophthalmology Inflammatory pseudotumor of orbit An idiopathic proliferation of the lymphoid tissue surrounding the ocular orbit, which may be autoimmune in nature and related to orbital myositis Clinical Pain, exophthalmos, limitation of eye movement, lid erythema, edema, myositis, perineuritis, scleritis, dacryoadenitis; the lesion may be histologically impossible to differentiate from a true lymphoma, and may require molecular studies to determine clonality DiffDx Dacryoadenitis, orbital myositis, vasculitis, sclerosing pseudotumors, lipogranuloma, epithelioid cell granuloma, xanthogranuloma. See Pseudolymphoma.