Fibroblastic Mixoinflamatory Sarcoma is a malignant tumor of low frequency, developed in adults during the fourth and fifth decade of life as a soft tissue subcutaneous mass, usually painless, placed distally in the distal extremities. We report the case of a 35 years-old female with a painless tumour at the first dorsal space of the right foot, of 4 months evolution. She did not refer any trauma history. We removed the lump and sent the sample to pathology department, which established the diagnosis of Fibroblastic Mixoinflamatory Sarcoma. Fibroblastic Mixoinflamatory Sarcoma is a rare tumour, often misdiagnose. We carried out a thorough review of the literature to divulge this type of tumour and its management.

Fibroblastic Mixoinflamatory Sarcoma is a malignant tumor of low frequency, developed in adults during the fourth and fifth decade of life as a soft tissue subcutaneous mass, usually painless, placed distally in the distal extremities. We report the case of a 35 years-old female with a painless tumour at the first dorsal space of the right foot, of 4 months evolution. She did not refer any trauma history. We removed the lump and sent the sample to pathology department, which established the diagnosis of Fibroblastic Mixoinflamatory Sarcoma. Fibroblastic Mixoinflamatory Sarcoma is a rare tumour, often misdiagnose. We carried out a thorough review of the literature to divulge this type of tumour and its management.