Diagnostic errors in subcutaneous myxofibrosarcoma: a retrospective case series before referral to specialist in bone and soft tissue tumors

Subcutaneous myxofibrosarcomas are rare; however, physicians who treat subcutaneous tumors need to be knowledgeable about them. This case series suggest that poorly planned biopsies may miss malignant tumors, and that careless puncturing may lead to deep invasion of the tumor. It also suggests that if you suspect a benign tumor, you should follow up with imaging, otherwise there is a possibility that it will lead to a significant delay in diagnosis.