Intimal Sarcoma

Jul 9, 2016 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Intimal Sarcoma

Intimal Sarcoma Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Malignant neoplasm arising from intimal aspect of large blood vessels Clinical Issues Pulmonary trunk or pulmonary artery Descending thoracic or…

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Silicone Reaction

Jul 9, 2016 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Silicone Reaction

Silicone Reaction Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Tissue reaction to silicone (dimethylpolysiloxane) implant, liquid silicone, or silicone gel Etiology/Pathogenesis Leakage from prosthetic implant in breast Cosmetic injection…

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Mycobacterial Pseudotumor

Jul 9, 2016 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Mycobacterial Pseudotumor

Mycobacterial Pseudotumor Elizabeth A. Montgomery, MD Key Facts Terminology Exuberant spindle cell lesion, usually involving lymph nodes, induced by mycobacteria Clinical Issues Immunocompromised patients Majority have AIDS and often also…

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Amyloidoma

Jul 9, 2016 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Amyloidoma

Amyloidoma Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Solitary localized tumor-like deposit of amyloid in absence of systemic amyloidosis Macroscopic Features Pale waxy cut surface Microscopic Pathology Amorphous acellular…

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PEComa

Jul 9, 2016 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on PEComa

PEComa Elizabeth A. Montgomery, MD Key Facts Terminology PEComa is abbreviation for neoplasms with perivascular epithelioid cell differentiation Mesenchymal neoplasms composed of distinctive perivascular epithelioid cells Includes angiomyolipoma (AML), clear…

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Clear Cell Sarcoma

Jul 9, 2016 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Clear Cell Sarcoma

Clear Cell Sarcoma Elizabeth A. Montgomery, MD Key Facts Terminology Sarcoma showing melanocytic differentiation Malignant melanoma of soft parts Clinical Issues Young adults (3rd or 4th decade) Usually affects extremities…

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Epithelioid Sarcoma

Jul 9, 2016 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Epithelioid Sarcoma

Epithelioid Sarcoma Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Malignant mesenchymal tumor resembling carcinoma or granuloma Shows predominantly epithelial but also mesenchymal differentiation Occurs in classical and proximal aggressive…

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Extrarenal Rhabdoid Tumor

Jul 9, 2016 by in PATHOLOGY & LABORATORY MEDICINE Comments Off on Extrarenal Rhabdoid Tumor

Extrarenal Rhabdoid Tumor Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Malignant neoplasm of polygonal cells with characteristic large cytoplasmic inclusion and eccentric large nucleus Requires exclusion of specific tumor…

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