Mycobacteria

Small bowel (small intestine)
Infectious disorders
Mycobacteria

Topic Completed: 1 August 2012

Revised: 12 March 2019

Copyright: 2003-2019, PathologyOutlines.com, Inc.

PubMed Search: Mycobacteria[TIAB] small bowel

See also: Tuberculosis

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Table of Contents

Cite this page: Gulwani H. Mycobacteria. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/smallbowelmycobacteria.html. Accessed February 27th, 2020.

Definition / general

Aerobic and nonmotile bacteria without endospores or capsules that typically cause small bowel disease only in immunosuppressed or HIV+, usually as part of disseminated infection

Case reports

31 year old woman with HIV and upper GI bleeding (Clin Infect Dis 2009;48:321, Clin Infect Dis 2009;48:368 [answer to quiz])

Microscopic (histologic) description

Foamy macrophages fill lamina propria
Usually patchy, no fat vacuoles

Microscopic (histologic) images

Images hosted on other servers:

Disseminated Mycobacterium
avium intracellulare complex
(MAC) with nodular infiltration
of duodenum

Positive stains

PAS (faintly positive bacillary forms), acid fast stains

Differential diagnosis

Whipple disease