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Pathology Outlines - Dermatofibroma (cutaneous fibrous …
Apr 11, 2022 · Dermatofibromas (also known as fibrous histiocytomas) are a spectrum of benign dermal based lesions with fibroblastic and histiocytic differentiation There is debate as to whether dermatofibroma is a reactive or neoplastic process Essential features Benign dermal based, nodular proliferation of fibroblasts and histiocytes
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Pathology Outlines - Dermatomyofibroma
Apr 16, 2021 · Distinct cutaneous plaque-like proliferation of fibroblasts and myofibroblasts ( J Cutan Pathol 1992;19:85, Br J Dermatol 1993;129:69 ) Also called cutaneous myofibroma. Women > men, usually age 20 - 39, but occasionally in children ( J Cutan Pathol 2011;38;967 ) Upper arms, neck or trunk. Pediatric cases more often in neck.
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Dermatofibroma (fibrous histiocytoma) pathology
Dermatofibroma is a common benign tumour also known as fibrous histiocytoma. There is debate as to whether dermatofibroma has a reactive or neoplastic origin. The clinical lesion is a firm tan-brown nodule most commonly found on the legs. A number of histological variants exist.
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Pathology Outlines - Dermatofibrosarcoma protuberans …
Feb 28, 2022 · Tumors are generally centered within the dermis or subcutis and characterized by spindle cells with a storiform to whorled pattern The cytoplasm is generally abundant and eosinophilic; the nuclei are monomorphic and ovoid to elongated with variable mitotic activity
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Dermatofibroma - Libre Pathology
Dermatofibroma - Libre Pathology Dermatofibroma Dermatofibroma, abbreviated DF, is a common benign skin lesion. It is also known as benign fibrous histiocytoma and fibrous histiocytoma . Contents 1 General 2 Microscopic 2.1 Subtypes 2.1.1 Cellular dermatofibroma 2.2 Epithelioid cell histiocytoma 3 IHC 4 Sign out 4.1 Micro 5 See also 6 References
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Dermatomyofibroma pathology | DermNet NZ
Differential diagnosis of dermatomyofibroma pathology. Immunohistochemical studies may be used to exclude other spindle cell lesions. The lack of expression of S-100 excludes neurofibroma and desmoplastic spindle cell naevus. Lack of epithelial …
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Pathology Outlines - Angiofibroma / fibrous papule
Mar 04, 2022 · Slightly raised dermal lesion composed of collagenous stroma with increased vasculature. Increased stromal cells with varying morphology. Cells can be plump, spindle shaped, stellate or multinucleate. Mitotic figures are rare.
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Dermatofibroma (histiocytoma) | DermNet NZ
A dermatofibroma usually presents as a solitary firm papule or nodule on a limb. A dermatofibroma can occur anywhere on the skin. Dermatofibroma size varies from 0.5–1.5 cm diameter; most lesions are 7–10 mm diameter. A dermatofibroma is tethered to the skin surface and mobile over subcutaneous tissue.
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Pathology Outlines - Neurofibroma-general
Jun 21, 2022 · Etiology. Neurofibromas are caused by a biallelic inactivation of the tumor suppressor gene ...
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