Bronchogenic cysts are mostly benign, congenital abnormalities originating from the remnants of the primitive foregut. A retroperitoneal location is rare. Due to the mostly asymptomatic behavior and the historical confusion regarding histology, an exact prevalence is not known. We present here a case report of a retroperitoneal bronchogenic cyst. A literature review was performed for cases of r...

the deadly schwannomas, as uncommon subtype of soft tissue tumors originate from peripheral nerve sheaths. retro peritoneum is an uncommon site for these tumors. here we present the clinical feature and therapeutic implication of a 38-year-old man affected by recurrent retroperitoneal schwannoma who admitted to emergency ward following abdominal pain. computed tomorgraphic scan showed a solid w...

A twenty-five-year-old female presented with a large retroperitoneal mass. Workup included history and physical exam, imaging, biopsy, colonoscopy, and gynecologic exam. After surgical resection, the mass was determined to be a primary retroperitoneal mucinous tumor (PRMT). Clinically and histologically, these tumors are similar pancreatic and ovarian mucinous neoplasms. PRMTs are rare and few ...

Malignant mesenchymoma is an interesting but very rare tumor in which malignant differentiation has occurred twice or more. We report a case of retroperitoneal malignant mesenchymoma consisting of osteosarcoma, leiomyosarcoma, liposarcoma and fibrosarcoma. Abdominal CT showed a large retroperitoneal mass with two separate and distinct parts, namely an area of prominent calcification and one of ...

Teratomas are neoplasms of the embryonic tissues that typically arise in the gonadal and sacrococcygeal regions of adults and children. Primary adult retroperitoneal teratomas are rare and demand challenging management options. We report a case of a unilateral primary retroperitoneal mature cystic teratoma mimicking an adrenal mass in a 28-year-old female patient. Complete resection of the mass...

Aggressive fibromatosis arising from the retroperitoneum is extremely rare. It may occur in association with previous trauma, abdominal surgery, drugs, Gardner's syndrome, or familial adenomatous polyposis. We report a case of retroperitoneal fibromatosis presenting as a presacral mass with an infiltrating nature, relatively intense enhancement on enhanced computed tomography scanning, and low-...

A 58-year old male presented with a hard lump in lower abdomen extending into pelvis. Clinical examination and computed tomography scan revealed pelvic retroperitoneal mass. Patient underwent exploratory laparotomy - revealing a well encapsulated retroperitoneal mass extending up to coccyx, posterior to the urinary bladder. It had displaced the recto-sigmoid colon and urinary bladder to the rig...

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...

A 69-year-old man was presented with a one-month history of abdominal discomfort. A retroperitoneal mass had been detected by on ultrasonography at another hospital, from where he was transferred to our hospital for further evaluation. The results of routine laboratory tests, including blood chemistry, urinalysis, and liver function was normal. Computed tomography (CT) examination of the abdome...

Adrenal tumors are frequently incidental discoveries, and the therapy for them is the subject of controversial discussions. We report herein on such an incidentaloma, which proved to be a benign retroperitoneal schwannoma. A 48-year-old female with an unclear adrenal mass underwent retroperitoneoscopic tumor extirpation. A well-defined tumor that displaced the adrenal gland and adhered firmly t...