Basicmedical Key

Synovial Sarcoma Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Name is historical accident, as tumor does not arise from or differentiate toward synovium Mesenchymal spindle cell tumor with variable…

Phosphaturic Mesenchymal Tumor Elizabeth A. Montgomery, MD Key Facts Terminology Synonym: Osteomalacia-associated mesenchymal tumor Definition: Rare distinctive mesenchymal neoplasm associated with oncogenic osteomalacia Clinical Issues Complete excision cures intractable oncogenic…

Ossifying Fibromyxoid Tumor Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Encapsulated tumor of small polygonal cells in fibromyxoid stroma with metaplastic ossification Majority benign Occasional atypical or malignant variants…

Angiomatoid Fibrous Histiocytoma Khin Thway, BSc, MBBS, FRCPath Key Facts Terminology Rare neoplasm of intermediate biologic potential Most often arises in extremities of children and young adults Histologically often confused…

Dermal Clear Cell Mesenchymal Neoplasm David S. Cassarino, MD, PhD Key Facts Terminology Rare, dermal-based clear cell tumor of unknown derivation Clinical Issues Cutaneous nodule Most cases have been reported…

Paraganglioma-like Dermal Melanocytic Tumor David S. Cassarino, MD, PhD Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Paraganglioma-like dermal melanocytic tumor (PDMT) Rare dermal-based, low-grade melanocytic tumor with histologic similarities…

Ectopic Hamartomatous Thymoma Khin Thway, BSc, MBBS, FRCPath Key Facts Terminology Rare benign tumor composed of spindle, epithelial, and adipose tissue elements that occurs mainly in lower neck region of…

Hemosiderotic Fibrohistiocytic Lipomatous Lesion Julie C. Fanburg-Smith, MD Aaron Auerbach, MD HEMOSIDEROTIC FIBROHISTIOCYTIC LIPOMATOUS LESION Terminology Benign, probably reactive, lesion that occurs in ankle region of adult females, usually secondary…

Superficial Acral Fibromyxoma Thomas Mentzel, MD Key Facts Terminology Benign fibroblastic neoplasm with predilection for hands and feet, especially nail bed region Clinical Issues Solitary mass involving toe, finger, or…

Superficial Angiomyxoma Khin Thway, BSc, MBBS, FRCPath Key Facts Terminology Benign, cutaneous myxoid lesion, associated in some cases with Carney complex Clinical Issues Trunk, head and neck, lower extremities, and…