Idiopathic Primary Retroperitoneal Cyst: A Case Report

Retroperitoneal cysts are rare; they are divided into neoplastic and non-neoplastic cyst. Incidences are 1 in 5750 to 1 in 250,000. They are often asymptomatic. Lymphangioma are benign cyst whereas 95% of them are found in the neck and axilla only 1% is in the abdomen. This is a case report describing the course of management for a 30-year-old male who presented to our outpatient clinic with abdominal discomfort due to retroperitoneal cyst.

Primary Retroperitoneal Filariasis Presenting with Acute Abdomen

Lymphatic filariasis is a common tropical parasitic infection caused by the Nematoda Filarioidae family. Filariasis predominantly affects the lymphoreticular system, leading to lymphedema, elephantiasis, hydrocele, and chyluria. However, its presentation as retroperitoneal cyst is very rare with a reported incidence rate of 1/105,000. We present a rare case of a previously healthy 26-year-old male presenting with abdominal and groin pain associated with chills and vomiting. Computerized tomography scan showed extensive cystic retroperitoneal lesion and ultrasound demonstrated “Dancing Filarial Sign.” Retroperitoneal filariasis can present without peripheral filarial signs. Hence, it should be considered in the differential diagnosis of acute abdominal pain of a patient who is originally from an endemic area.

A case of giant retroperitoneal lymphangioma and IgG4-positive fibrosis: Causality or coincidence?

Several chronic inflammatory diseases have been found to be a subtype of IgG4-related disease, all of which have a typical clinical and histological change, which is based in particular on an overexpression of IgG4 and subsequent fibrosis. At least a part of the retroperitoneal fibrosis, which was originally classified as idiopathic, seems to be assigned to IgG4-related disease. Lymphangiomas are benign, cystic tumors that rarely occur in adults. However, there is no firm association with IgG4-related disease described in the literature to date. This report is about a patient suffering from acute renal failure due to a giant retroperitoneal cyst. Surgical resection remains incomplete in the iliac vessel area due to severe fibrosis and histology revealed features of both lymphangioma and IgG4+ fibrosis. The case description is followed by a brief overview of IgG4-related disease and a consideration of whether lymphangiomas might be assigned to this topic.

Novel Presentation of Retroperitoneal Cyst-A Clinical Case Report

Cystic lesions of the adrenal gland are usually rare, seen in 1/5750 to 1/250,000 of the population. They may be true cysts, infectious cysts, malignancies with cystic degeneration, or pseudocysts. Adrenal cysts are rare in the differential diagnosis of Retroperitoneal Cysts (RPC) and may be treated. They can be correctly identified through pathological testing. Here, the author presents a case of giant adrenal cyst in a young 38-year-old female.

Upper Abdominal Primary Retroperitoneal Cyst with Unusual Urothelial Histogenesis - An Uncommon Presentation Masquerading as a Hepatic Cyst

Background: Benign retroperitoneal cysts are uncommon. There is a paucity of literature on primary upper abdominal retroperitoneal cysts of urothelial histogenesis. We report an uncommon presentation of urothelial cyst clinically mimicking a hepatic cyst. Case presentation: A 21-year old female patient was admitted with intermittent abdominal pain of 9 months duration diagnosed on radiology as a right hepatic cyst. Laparoscopic resection and pathologic examination revealed a primary retroperitoneal cyst with a urothelial histogenesis. This is an unusual clinical presentation of a rare lesion mimicking a hepatic cyst. Conclusion: This case highlights the unusual anatomic location and the rare occurrence of an upper abdominal retroperitoneal urothelial cyst.