In 1934 Lemmel was the first to report the presence of juxtapapillary diverticula and hepatocholangiopancreatic disease, excluding cholelithiasis. Obstructive jaundice caused by periampullary duodenal diverticulum (PAD) in absence of choledocholithiasis or tumor is known as Lemmel syndrome. A patient with an extraluminal duodenal diverticulum presenting with obstructive jaundice and pancreatitis is presented in this case. Although initially managed conservatively, the patient had recurrence of symptoms after 2 months but then had successful surgical resection of the duodenal diverticulum. LEARNING POINTS Lemmel’s syndrome should be considered in patients with pancreaticobiliary disease in the absence of tumors, stricture, or cholelithiasis. Non-invasive imaging studies should be considered first but endoscopic retrograde cholangiopancreatography (ERCP) remains the diagnostic method of choice. Surgical resection (diverticulectomy), endoscopic sphincterotomy, and papillary balloon dilatation are treatment options when conservative management fails.

A 66 year old man was diagnosed with CNS diffuse large B-cell lymphoma, and underwent treatment with Temozolomide, Dexamethasone, Rituximab, and radiation therapy, and prolonged steroid taper with Dexamethasone. Approximately one month after this, he presented with severe acute hypoxemic respiratory failure, and was admitted to the Medical Intensive Care Unit. Imaging showed diffuse ground glass opacities. Patient underwent diagnostic bronchoalveolar lavage which was positive for Pneumocystis jiroveci. He did not respond well to appropriate therapy and was transitioned to comfort care per his family's wishes, and expired. Pneumocystis jiroveci should always be included in the differential diagnosis of pneumonia in patients treated with Temozolomide, especially when this agent is used in combination with long term, high dose corticosteroids and radiation therapy.

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