ABSTRACT
A large variety of masses occur in the foot. The foot is a comparatively rare site of soft tissue neoplasms. MRI has greatly improved the ability to detect and delineate soft tissue lesions and is now considered the gold-standard imaging technique in their investigation. Recently, we have encountered rare soft tissue tumors of the foot. The presented cases include benign masses such as granuloma annulare, angiomyoma, neural fibrolipoma, and giant cell tumor of tendon sheath, as well as malignant tumors such as melanoma, synovial sarcoma, rhabdomyosarcoma and extraskeletal myxoid chondrosarcoma. We wish to illustrate the MR findings of these uncommon soft tissue tumors to aid in their diagnosis.
Subject(s)
Angiomyoma , Chondrosarcoma , Diagnosis , Foot , Giant Cell Tumors , Granuloma Annulare , Magnetic Resonance Imaging , Melanoma , Rhabdomyosarcoma , Sarcoma, Synovial , Soft Tissue Neoplasms , TendonsABSTRACT
Malignant schwannomas arising from the peripheral nerve sheath of the foot are very rare. We encountered a case of malignant schwannoma of the great toe in a 60-year-old woman with painful swelling and exudative ulceration, and report the findings of MR imaging and review the literature.
Subject(s)
Female , Humans , Middle Aged , Foot , Magnetic Resonance Imaging , Neurilemmoma , Peripheral Nerves , Toes , UlcerABSTRACT
Giant cell tumor of the tendon sheath(GCTTS) is a benign condition which involves the synovium of the tendonsheaths, and usually occurs around the small joints, e. g. the ankle, knee, and wrist. Histologically, GCTTS is similar to pigmented villonodular synovitis(PVNS). The authors report MRI findings of a GCTTS. This showed lower signal-intensity lesions than adjacent muscles on T1-weighted, proton density weighted, and T2-weighted images.