Cystic Change in a Primary Retroperitoneal Angiosarcoma: A Case Report

A retroperitoneal angiosarcoma is rare. Especially, a cystic change in retroperitoneal angiosarcoma is extremely rare and it is difficult to distinguish an angisarcoma with a cystic change in the differential diagnosis with other retroperitoneal cystic masses. We report here a case of a cystic change in a retroperitoneal angiosarcoma of a 61-year-old woman who complained of abdominal pain. Imaging studies, including ultrasonography and computed tomography, detected a lobulating cystic mass with inner enhancing irregular septations and walls in the retroperitoneum. The tumor was surgically resected and was histopathologically diagnosed as an angiosarcoma.

Endovascular Treatment with a Stent-Graft for Internal Carotid Artery Laceration during Trans Sphenoidal Surgery: A Case Report

An internal carotid artery (ICA) tear during or after trans-sphenoidal surgery (TSS) is rare but may cause potentially lethal complications. A 23-year-old female patient visited our hospital for treatment of a Rathke's cleft cyst. The patient had massive hemorrhage during surgery and angiography performed after surgery showed laceration of the cavernous ICA. We successfully controlled the hemorrhage with emergency placement of an endovascular stent-graft.