Heart
Cardiac tumors - benign
Lambl's excrescence

Author: Nat Pernick, M.D. (see Authors page)

Revised: 23 September 2015, last major update May 2007

Copyright: (c) 2003-2015, PathologyOutlines.com, Inc.

PubMed Search: Lambl's excrescence
Cite this page: Lambl's excrescence. PathologyOutlines.com website. http://pathologyoutlines.com/topic/hearttumorlamblexcrescence.html. Accessed April 30th, 2017.
Definition / general
  • Also called valvular strands
  • Common finding in elderly patients
  • Small filiform / papillary processes that are age-related; may be organized mural thrombi at site of minor endothelial damage
  • Associated with stroke, particularly among younger patients (Stroke 1997;28:2185)
  • Aortic/pulmonic valves: most common at nodules of Aranti, along lines of closure and free cuspal edges
  • Tricuspid/mitral valves: at site of valve closure on atrial surface
Clinical images

Contributed by Pallavi Khattar, M.D. (New York Medical College at Westchester Medical Center), Puneet Bedi, M.D. (Brookdale University Hospital and Medical Center, New York) and John T Fallon, MD, PhD (New York Medical College at Westchester Medical Center)

Microscopic (histologic) description
  • Connective tissue / fibrin covered by endothelium
Microscopic (histologic) images

Fingerlike projection extending from valve surface without branching



Contributed by Pallavi Khattar, M.D. (New York Medical College at Westchester Medical Center), Puneet Bedi, M.D. (Brookdale University Hospital and Medical Center, New York) and John T Fallon, MD, PhD (New York Medical College at Westchester Medical Center):

CD34

Elastin stain

S100

Additional references