Mycobacteria

Small bowel (small intestine)
Infectious disorders
Mycobacteria

Author: Hanni Gulwani, M.D. (see Authors page)

Revised: 14 February 2018, last major update August 2012

Copyright: (c) 2003-2018, PathologyOutlines.com, Inc.

PubMed Search: Mycobacteria[TIAB] small bowel

See also: Tuberculosis

Table of Contents

Cite this page: Gulwani, H. Mycobacteria. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/smallbowelmycobacteria.html. Accessed October 19th, 2018.

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