Disseminated panniculitis in a bottlenose dolphin (Tursiops truncatus) due to mycobacterium chelonae infection

Arno Wünschmann, Anibal Armien, N. Beth Harris, Barbara A. Brown-Elliott, Richard J. Wallace, James Rasmussen, Michelle Willette, Tiffany Wolf

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A 14-year-old female bottlenose dolphin was diagnosed with mycobacterial panniculitis based on punch biopsy specimens. The necropsy revealed numerous pyogranulomas in the blubber, as well as marked acute multifocal necrosuppurative pneumonia and lymphadenitis. In addition, the animal had marked scoliosis, which had first been noted clinically in the dolphin at about 1 mo of age. The animal had been treated with low-dose dexamethasone for approximately the last 19 mo to reduce perceived discomfort from Spondylarthritis and with the progestational agent altrogenest for approximately 8 yr to prevent pregnancy. Acid-fast positive bacilli were detected in the dermis but not in lung or lymph nodes. Mycobacterium chelonae was isolated from pooled skin, lung, and peripheral lymph-node tissue. Mycobacterial infection may be considered as a differential diagnosis in bottlenose dolphins with generalized cutaneous inflammation, particularly if chronic steroid and progesterone treatments were administered, both of which may have an immunomodulatory effect.

Original languageEnglish (US)
Pages (from-to)412-420
Number of pages9
JournalJournal of Zoo and Wildlife Medicine
Volume39
Issue number3
DOIs
StatePublished - Sep 1 2008

Keywords

  • Bottlenose dolphin
  • Mycobacterium chelonae
  • Pyogranulomatous panniculitis
  • Tursiops truncates

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