Selective tyrosine kinase inhibitor (TKI) targeting KIT and PDGFRA is the frontline therapy for metastatic and unresectable GIST patients. Some initially responsive patients experience tumor progress because of secondary drug resistance, and some cases can develop heterogeneous differentiation. Here we report a rare case of recurrent retroperitoneal extra-GIST with rhabdomyosarcomatous and chon...

A 54-year-old female had a 9-cm left renal mass with a 12-cm aorto-caval mass lesion mimicking an enlarged lymph node. Retroperitoneal dissection and left radical nephrectomy were performed, and pathology revealed a left renal mucinous tubular and spindle cell carcinoma combined with a retroperitoneal ganglioneuroma. The patient has had no local recurrence or distant metastasis after 3 years' f...

the case was an 18-year-old female with progressive crampy abdominal pain, nausea and vomiting, initiated from 4 months ago, who had 4-5 kg weight loss in this period. in physical examination, an ill-defined mass with mild tenderness in periumblical region palpation was detected. in upper gi endoscopy, bulging folds with a necrotic mass in d2- d3 were detected. in small bowel series study, cut ...

We report an unusual case of a giant primary retroperitoneal mature cystic teratoma in right adrenal region in a 39-year-old Chinese female. The patient has complained of dizziness and a high blood pressure approximately 170/110 mmHg for half one year. A plain helical and enhanced CT scan showed a huge tumor with a mixing density in recessus hepatorenalis. This tumor had calcification and fat, ...

INTRODUCTION We sought to compare surgical outcomes between transperitoneal and retroperitoneal robotic partial nephrectomy (RPN) for posterior tumors. PATIENTS AND METHODS Using our multi-institutional RPN database, we reviewed 610 consecutive cases for posterior renal masses treated between 2007 and 2015. Primary outcomes were complications, operative time, length of stay (LOS), surgical ma...