High-Grade Infiltrative Myxofibrosarcoma in the Forearm Presenting as Acute Carpal Tunnel Syndrome

Myxofibrosarcoma is one of the most common sarcomas in the extremities of elderly people and is characterized by a high frequency of local recurrence. We report a rare case of high-grade myxofibrosarcoma involving the forearm and presenting as acute carpal tunnel syndrome where absence of a discrete mass lesion and diffuse infiltrative nature precluded early recognition of tumor. To our knowledge, such a presentation with an extreme infiltrative growth pattern in the forearm has not been reported before. Myxofibrosarcoma is one of the most common sarcomas in the extremities of elderly people and is characterized by a high frequency of local recurrence. We report a rare case of high-grade myxofibrosarcoma involving the forearm and presenting as acute carpal tunnel syndrome where absence of a discrete mass lesion and diffuse infiltrative nature precluded early recognition of tumor. To our knowledge, such a presentation with an extreme infiltrative growth pattern in the forearm has not been reported before.