Tumor fusocelular hialinizante con rosetas gigantes: Caso clínico y revisión de la literatura

Resumo

Hyalinizing spindle cell tumor with giant rosettes is a low-grade fibromixoid sarcoma, representing 10-25% of these. It is a fibroblastic soft tissue tumor and only a few cases have been described in literature. The tumors occur principally as a painless, slowly growing, deeply situated mass of the proximal extremities. We describe a 65 year-old man who appeared to have an axillary tumor, which we subsequently removed. The anathomopathologic results revealed hyalinizing spindle cell tumor with giant rosettes. The extension exam did not reveal any metastatic lesions. The first five years after surgery, we didn ́t find recurrence or metastatic lesions. This kind of tumor therefore, is very uncommon and protocols for the diagnosis, treatment and following are thus scarce. Having access at the time to a clinical guide to help decipher the complexities surrounding the diagnosis would have been hugely beneficial. Initial treatment should be the same as all other soft-tissue tumors as this treatment is based in image studies and biopsy. Choice treatment is to surgically remove the tumor, both the primary and metastatic lesions. In terms of prognosis, it was initially believed to be consistent with a low rate of recurrence and metastasis. However, actual studies with longer follow-up periods do show recurrence and metastasis to be more common than previously thought. Metastases mainly occur in the lung and pleura. With the actual state we rethink if low-grade fibromixoid sarcoma is a correct term to wedge it.