PATHOLOGY & LABORATORY MEDICINE

Tumors of neuroectodermal origin

Oct 29, 2019 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Tumors of neuroectodermal origin

Reactive lesions Traumatic Neuroma Definition • A reactive/reparative process characterized by proliferation of axons, Schwann cells, and perineurial fibroblasts in a disorganized pattern in the background of collagenous stroma (scar)…

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Tumors of vascular origin

Oct 29, 2019 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Tumors of vascular origin

Benign tumors including reactive vascular proliferations and ectasias Intravascular Papillary Endothelial Hyperplasia (Masson tumor) Definition • A nonneoplastic, reactive, endothelial proliferation representing an organizing thrombus, characterized by formation of arborizing…

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Adipocytic tumors

Oct 29, 2019 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Adipocytic tumors

Benign tumors and reactive conditions Lipoma Definition • A benign dermal or subcutaneous mesenchymal tumor composed of mature adult-type adipose tissue Clinical features Epidemiology • The most commonly encountered mesenchymal…

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Fibrohistiocytic tumors

Oct 29, 2019 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Fibrohistiocytic tumors

Benign tumors Fibrous Papule Definition • A benign proliferation in the superficial dermis, composed of fibroblasts, blood vessels, and sparse inflammatory cell infiltrate in the background of a sclerotic dermal…

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Skeletal Muscle Tumors

Oct 29, 2019 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Skeletal Muscle Tumors

Benign tumors Rhabdomyomatous Mesenchymal Hamartoma Definition • A rare dermal or subcutaneous benign lesion composed of disordered mature elements, including skeletal muscle, adipose tissue, nerve bundles, blood vessels, adnexal tissue,…

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Mesenchymal Lesions

Nov 17, 2018 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Mesenchymal Lesions

Mesenchymal Lesions Frederick C. Koerner The diagnosis of mesenchymal mammary lesions using core biopsy specimens often challenges the pathologist. The limitations posed by the small size of the tissue samples…

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