Alveolar soft part sarcoma: clinical course and patterns of metastasis in 70 patients treated at a single institution

Retroperitoneal alveolar soft-part sarcoma: A case report

Alveolar soft-part sarcoma is a rare type of malignant soft tissue tumor that usually presents as a painless, slow-growing mass and is easily misdiagnosed as paraganglioma, alveolar rhabdomyosarcoma, clear cell renal cell carcinoma, or granular cell tumor. Alveolar soft-part sarcoma of the retroperitoneum is extremely rare. Here we report a case of retroperitoneal alveolar soft-part sarcoma that was correctly diagnosed based on a combination of imaging, clinical and pathological features and the use of immunohistochemical and gene detection techniques. A literature review was performed to further raise the awareness of this rare disease.