Basicmedical Key

Fibroosseous Pseudotumor David R. Lucas, MD Key Facts Terminology Benign reactive ossifying fibroblastic proliferation most often affecting skin and soft tissue in digits of hands and feet Clinical Issues Proximal…

Osteoma Cutis David S. Cassarino, MD, PhD Key Facts Etiology/Pathogenesis Primary: May be part of Albright hereditary osteodystrophy or other genetic syndromes Secondary: Associated with preexisting lesions, such as nevi,…

Heterotopic Mesenteric Ossification Elizabeth A. Montgomery, MD Key Facts Terminology Intraabdominal myositis ossificans Metaplastic, probably reactive process variably associated with trauma Clinical Issues Adults; mean age: 50-60 years Small bowel…

Myositis Ossificans Elizabeth A. Montgomery, MD Key Facts Clinical Issues Mean age: ˜ 30 years (range: 1-95 years) M > F (˜ 3:2) for classic lesions F > M for…

Ewing Sarcoma/PNET of Soft Tissue Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Family of small round cell translocation-associated sarcomas occurring in bone, soft tissue, or skin Additionally, PNET shows…

Melanotic Neuroectodermal Tumor of Infancy Jeremy Wallentine, MD Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Rare, fast-growing, pigmented neoplasm, likely of neural crest origin Clinical Issues Most present in…

Paraganglioma Nina Gale, MD Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Tumor arising from paraganglia Clinical Issues Variety of sites More frequent in head and neck Thorax, abdomen, larynx,…

Malignant Peripheral Nerve Sheath Tumor David R. Lucas, MD Cyril Fisher, MD, DSc, FRCPath Key Facts Terminology Sarcoma arising from a nerve or benign nerve sheath tumor or showing nerve…

Ganglioneuroma Khin Thway, BSc, MBBS, FRCPath Key Facts Terminology Benign, well-differentiated tumor of neurogenic origin Etiology/Pathogenesis Usually develop de novo Clinical Issues Most commonly located in posterior mediastinum Also in…