A 74-year-old male with abdominal pain was admitted to the emergency room in our hospital. The high value of serum amylase was shown in his blood test. The postcontrast computed tomography (CT) showed the huge retroperitoneal tumor with a thin-walled mass occupying most of the part of the right retroperitoneal space. The tumor spread into the soft tissues around the pancreas; as a result, the d...

A 50-year old male presented to our emergency department with sudden abdominal pain. Upon arrival he was diaphoretic, pale and tachycardic. CT showed retroperitoneal hemorrhage suspected tumor at the left adrenal gland. He quickly stabilized intravenous fluids blood transfusion. Rebleed occurs roughly a week after discharge new visceral pseudoaneurysm from middle artery. The embolized patient d...

We report on two infants of 11 and 12 months of age, respectively, with large solid-cystic retroperitoneal tumors. Complete resection was achieved, and both children are doing well over a follow-up of more than 17 months. The presented paper focuses on surgical anatomy of this very rare type of tumor. Teratomas were located mainly within the upper abdominal cavity, and both tumors displaced the...

BACKGROUND Ganglioneuroma (GN) is a rare benign tumor arising from the neural crest cells. The reported incidence of GN is one per million population. As a primary retroperitoneal tumor, it constitutes only a small percentage of 0.72 to 1.6%. GN can arise de novo or as a result of maturation of a neuroblastoma either spontaneously or after chemotherapy. The most common location is the posterior...

Liposarcoma is very rare mesenchymal tumor that occurs in deep soft tissue and mostly seen in limbs and retroperitoneum, accounts for 24% of extremity and 45% of retroperitoneal soft tissue sarcomas. Retroperitoneal liposarcomas are typically present with advanced disease and often carry a poor prognosis. Retroperitoneal liposarcomas grow slowly in the very expandable retroperitoneal space in t...

We report a rare case of a retroperitoneal germ cell tumor in a 31 years old male who presented with an acute abdomen. He gave a six-months history of back pain and significant weight loss. Clinical examination and ultrasound of the testes didn't show any primary focus. Intraoperative findings showed a retrolperitoneal midline mass that has ruptured into the peritoneal cavity and has invaded in...

A case of primary carcinoma of the urinary bladder associated with a primary retroperitoneal leiomyosarcoma is presented. Due to the lack of early symptoms, diagnosis of the retroperitoneal leiomyosarcoma was late and therefore the prognosis was poor. Twelve months after diagnosis the patient died not of the bladder tumor, but of the recurrent leiomyosarcoma.

Retroperitoneal ancient schwannoma is a quite uncommon tumor of the peripheral nerve sheaths. Despite its benign course, it may also display malignant behavior. Herein, we presented a retroperitoneal ancient schwannoma case together with clinical, radiological and pathological characteristics of the disease, which had been detected incidentally via ultrasonography in a 24-year-old patient with ...