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The postbulbar segment also known as the distal duodenum is a separate clinical entity in terms of the intrinsic pathologies of this region and its varied anatomical relations. The common bile duct and the pancreatic duct open through the major papilla, which marks the beginning of this segment. Distal duodenal obstruction can be defined as a clinicoradiological entity that is characterized by features of gastric outlet obstruction with recurrent bilious vomiting and a radiological evidence of postbulbar obstruction. A Medline search for distal duodenal obstruction revealed 1409 entries, mostly in the form of case reports. In the last 10 years, 310 cases are reported. Clinical features like abdominal pain, nausea, and vomiting are non-specific and quite similar to gastric outlet obstruction. Clinical findings are also non-specific and do not aid in diagnosis. Laboratory findings also do not add much. Contrast-enhanced CT scan and MR enterography are diagnostic modalities of choice. Distal duodenal obstruction is a clinical entity that has a wide list of differential diagnosis which requires due consideration in terms of its management and follow-up. Most of these lesions require adequate workup with the help of a multidisciplinary team consisting of radiologists, gastroenterologists, and pathologists to adequately diagnose and stage the disease before a treatment plan is formulated. A thorough knowledge is a must regarding the treatment options available for each of the conditions so that the management can be personalized leading to better results. [ABSTRACT FROM AUTHOR]

Jejunojejunal intussusception with internal herniation of the stomach through a gastrojejunostomy stoma is one of the rarest complications of the previous gastric surgery. The incidence is reported to be less than 0.1 %. An elderly male presented to the emergency room with signs of intestinal obstruction for 1 day. There was also history of appearance of a lump in the mid-abdomen. A primarily healed midline scar of the previous surgery was present; the details of which were not known. X ray abdomen in the erect posture showed multiple air fluid levels. Ultrasonography (USG) revealed dilated stomach with central hyperechogenicity with a peripheral rim of decreased echogenecity. Contrast-enhanced computed tomography (CECT) scan showed jejunojejunal intussusception with internal herniation of the stomach. On laparotomy, it was found that there was a previous gastrojejunostomy with jejunal invagination leading to gangrene of a segment. Resection anastomosis was done. The postoperative period was uneventful. [ABSTRACT FROM AUTHOR]