Soft Tissues Are Grossly Unremarkable

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Radiologic Clinics of North America

Differential diagnosis of soft tissue lesions of the foot can be narrowed with imaging. The cystic nature of ganglia, synovial cysts , and bursitis tin be confirmed with MR imaging or sonography. Location and betoken characteristics of noncystic lesions can suggest Morton's neuroma, giant cell tumor of tendon sheath, and plantar fibromatosis. Synovial-based lesions of the pes and ankle tin can be differentiated based on presence or absence of mineralization, lesion density, bespeak intensity, and enhancement pattern. Knowledge of the incidence of specific neoplasms of the pes and ankle based on patient age aids in providing a express differential diagnosis.

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Ganglia

Ganglia are the most mutual soft tissue masses in the pes and ankle, representing more 40% of suspected soft tissue masses.ⁱ Ganglia are myxoid lesions that occur around joints or tendon sheaths and ofttimes are multiloculated. They likely are acquired by the coalescence of small cysts formed by myxomatous degeneration of periarticular connective tissue.² Ganglia oftentimes are diagnosed clinically and never imaged; even so, MR imaging can be helpful if the ganglion is palpable or symptomatic

Tumors

In an evaluation of more than than 39,000 tumor cases compiled from a referral database, Kransdorf reported the most common benign soft tissue tumors of the human foot and talocrural joint based on patient age.19, twenty In the pediatric subset, fibromatosis and granuloma annulare proved the about common benign tumors sent for referral; synovial sarcoma, dermatofibrosarcoma protuberans, and rhabdomyosarcoma were the virtually common cancerous tumors of the foot and ankle. In the developed pes and ankle, fibromatosis and behemothic

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