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Matthew Hanson

All articles by Matthew Hanson

Dermatology

Dabska tumor (Dabska-type Hemangioendothelioma Endovascular Papillary Angioendothelioma, Hobnail Hemangioendothelioma, Malignant Endovascular Papillary Angioendothelioma, Papillary Intralymphatic Angioendothelioma)

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Are You Confident of the Diagnosis? Dabska tumors are rare tumors reported most often in children. These lesions are usually noted by the parents of patients as a growing mass of tissue. Dabska tumors may occur congenitally or may grow from a preexisting benign vascular lesion. Characteristic findings on physical examination Often Dabska tumors are…

Dermatology

Clear cell acanthoma (Pale cell acanthoma, Degos acanthoma, and Acanthome cellules claires of Degos and Civatte)

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Are You Confident of the Diagnosis? What you should be alert for in the history Clear cell acanthomas often appear as a slowly growing papule or plaque on the lower extremities. These lesions are usually asymptomatic. Characteristic features on physical examination A clear cell acanthoma appears as a solitary, well defined, and moist pink-red nodule…

Dermatology

Acquired Digital Fibrokeratoma (Acral Fibrokeratoma)

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Are You Confident of the Diagnosis? What you should be alert for in the history Patients often present complaining of an asymptomatic growth on the hand or foot. Characteristic findings on physical examination These lesions are characterized by a flesh-colored hyperkeratotic protuberence surrounded by a collarette of surrounding skin. Lesions usually measure 4-8 mm in…

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