An adult case of a retroperitoneal isolated enteric duplication cyst with the imaging changes over time

Background Adult cases of retroperitoneal isolated enteric duplication cyst (IEDC) are rare, with only 17 case reports in the relevant literature. We herein present a case, which was characterized by changes in intra-cystic density on computed tomography (CT), which was safely resected by laparoscopic surgery. Case presentation The patient was a 60-year-old male who received abdominal CT to investigate the cause of increased serum CA19-9 levels. CT revealed a unilocular cystic mass located in the lower right retroperitoneum. The size increased from 5 to 10 cm in three and a half years and the CT value decreased from 101 Hounsfield Units (HU) to 20 HU. We performed laparoscopic surgical resection, because the possibility that the enlargement of the lesion represented malignant transformation could not be denied. The large cystic mass firmly adhered to the appendix and its mesentery via the retroperitoneum, the appendix was resected en bloc with the cystic lesion. Microscopically, it had no communication with the appendix, and had an intestinal wall structure of muscularis mucosae and muscularis propria. The final pathological diagnosis was IEDC in the retroperitoneal space. There was no histological evidence of malignancy. Conclusion When we encounter a retroperitoneal cystic lesion, we should consider the possibility of malignancy to determine the treatment strategy and perform a careful operation without breaking the cyst wall, irrespective of the preoperative diagnosis.

Asymptomatic Enteric Duplication Cyst in a Geriatric Cat: Case Report and Review of the Literature

ABSTRACT An 11 yr old female neutered domestic shorthair presented for an 8 mo history of an asymptomatic abdominal mass. Computed tomography described an irregular, cystic structure closely associated with the duodenum, and focal ultrasonography confirmed the mass shared outer layers with the intestinal wall. Coeliotomy revealed the mass was originating from, and firmly adhered to, the antimesenteric border of the duodenum but was not communicating with the intestinal lumen. En bloc mass resection with omentalization was performed without small intestinal resection. Histopathology confirmed an enteric duplication cyst. The cat made a full recovery and remained asymptomatic postoperatively with no evidence of recurrence. A review of the literature confirms the duodenum to be the most common location of enteric duplication cysts in felines and that subtotal excision is curative in most cases. This differential should be considered in cases of cystic gastrointestinal structures in juvenile and adult felines, with or without associated clinical signs. In cases of luminal involvement or malignant transformation, intestinal resection and anastomosis is more appropriate. This report describes the presentation, investigations, and treatment of an asymptomatic duodenal duplication cyst in an adult feline and summarizes and compares current knowledge of the condition between veterinary and human literature.

Ileocolic Intussusception in an Infant with Ileal Duplication Cyst as a Lead Point- A Case Report

Gastrointestinal duplication cysts are uncommon congenital malformations, with small intestine being the most common site, followed by colon and stomach. It can have variable presentations such as intestinal obstruction, bleeding, palpable mass, or rarely volvulus. Here, the authors report a case of intussusception in a two-year-old child, presented with complaints of bilious vomiting and abdominal distension for three days with X-ray features suggestive of bowel obstruction. Ultrasonography revealed intussusception with ileal duplication cyst as the lead point, which was confirmed on exploratory laparotomy. In a paediatric patient, enteric duplication cyst should be included in the differential diagnosis of a cystic lesion as the lead point in intussusception.

NON COMMUNICATING ENTERIC DUPLICATION CYST : CASE REPORT

A 16 year old adolescent boy with painless abdominal distension. Computed Tomography showed large multiloculated abdomino pelvic cystic lesion compressing adjacent structures without any communication to the stomach, pancreas, small and large gut.