Primary Osteosarcoma of the Urinary Bladder Metastatic to Lung

Amira Elwy, Amr Soliman, Mohamed Maher, Yasmin Abdelhakam, Ali Saad, Mohamed Ahmed Abdul Latif Elsayed, Mohamed El-Kaffas, Noha Rashad, Nesreen Magdy


Extra-skeletal osteosarcoma (ESOS) is a rare neoplasm that represents less than 2% of all soft tissue sarcomas. Common reported sites of involvement include limbs, retroperitoneum, chest wall and buttocks. ESOS arising primarily in parenchymatous organs are extremely uncommon, with the involvement of the urinary bladder is even rarer. We herein report a case of primary ESOS of the urinary bladder in a 48 year-old male patient.

J Med Cases. 2021;12(7):280-283


Urinary bladder; Osteosarcoma; Bone forming tumors; Lung metastases; SATB2

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