Antopol-Goldman lesion: a rare clinical entity in the differential diagnosis of macroscopic hematuria.

Objective: To describe the case of a patient with gross hematuria. The pathological study revealed a subepithelial hematoma of the renal pelvis (Antopol-Goldman lesion).

Methods/results: An 86 year-old woman presented with gross hematuria through the right ureteral orifice.

Benign calcifying fibrous-myofibroblastic tumor mimicking myositis ossificans in a 22-month-old girl.

Myositis ossificans circumscripta (MOC), with nonneoplastic heterotopic bone formation in soft tissue and skeletal muscle, is rare in children. Extraskeletal osteosarcoma is a very rare malignant mesenchymal neoplasm of soft tissues in children. At onset, it may be difficult to distinguish MOC from a musculoskeletal infection or neoplasm, particularly in the absence of trauma, and a biopsy is frequently required.