Unusual Presentations of Mycobacterium Tuberculosis in HIV-Positive Patients: A Case Series.

Necrotizing and non-necrotizing epithelioid granulomatous chronic inflammation is the usual recognizable histopathologic presentation of mycobacterial infections. In immunosuppressed patients, atypical histomorphologic patterns may occur. Rare and diagnostically challenging manifestations of nontubercular mycobacterial infections in transplant and Human Immunodeficiency Virus (HIV)-infected patients include mycobacterial spindle cell pseudotumor and suppurative lesions.

Histopathologic Manifestations of Crohn Disease in Duodenal Endoscopy Biopsy: The Value of Different Patterns of Involvement of Brunner Glands.

Crohn disease (CD) not uncommonly involves the upper gastrointestinal tract, usually gastric antrum and proximal duodenum. The most consistent histopathologic manifestations of CD in duodenal biopsies are mucosal erosion, focal active inflammation, and granulomas. Since CD is a transmural inflammation and since duodenal biopsy may include submucosal Brunner glands, we aimed to find if CD has any specific histopathologic manifestations in Brunner gland lobules and their ducts compared to other duodenal inflammatory lesions.

Stroke in the Middle-East and North Africa: A 2-year prospective observational study of intravenous thrombolysis treatment in the region. Results from the SITS-MENA Registry.

Background And Methods: Intravenous thrombolysis for acute ischemic stroke in the Middle-East and North African (MENA) countries is still confined to the main urban and university hospitals. This was a prospective observational study to examine outcomes of intravenous thrombolysis-treated stroke patients in the MENA region compared to the non-MENA stroke cohort in the SITS International Registry.

Results: Of 32,160 patients with ischemic stroke registered using the SITS intravenous thrombolysis protocol between June 2014 and May 2016, 500 (1.