Equine focal mucopurulent placentitis associated with Stenotrophomonas maltophilia

Summary Two cases of focal mucopurulent placentitis (FMP) associated with Stenotrophomonas maltophilia are reported herein. The first patient, a 12‐year‐old Quarter Horse mare, aborted at 287 days of gestation and the fetus and placenta were submitted for post‐mortem examination. Histopathological f...

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Bibliographic Details
Published in:Equine veterinary education 2021-09, Vol.33 (9), p.452-452
Main Authors: Gomes, V. C. L., Del Piero, F., Langohr, I. M., Aguiar, L. H., Anderson, A., Sones, J. L., Pinto, C. R.
Format: Article
Language:English
Subjects:
abortion
allantochorionitis
Chorion
Exudation
Fetuses
Gestation
Hepatitis
horse
Horses
Necrosis
nocardioform
Patients
Placenta
premature delivery
Sepsis
Stenotrophomonas maltophilia
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Summary:Summary Two cases of focal mucopurulent placentitis (FMP) associated with Stenotrophomonas maltophilia are reported herein. The first patient, a 12‐year‐old Quarter Horse mare, aborted at 287 days of gestation and the fetus and placenta were submitted for post‐mortem examination. Histopathological findings included chronic exudative allantochorionitis and fetal multifocal suppurative hepatitis. The second patient, a 10‐year‐old Thoroughbred mare, prematurely delivered a live foal at 293 days of gestation. Chronic exudative allantochorionitis and perifunisitis were diagnosed. The foal was severely compromised and was euthanised. On post‐mortem examination, pneumonia, myocardial and hepatic necrosis, and sepsis were diagnosed. The fetal membranes of both mares had a thick adherent mass of exudate overlaying the chorionic surface. The lesions were well demarcated, and the underlining chorion was avillous, pale and thickened. Stenotrophomonas maltophilia was isolated from the exudate of both mares and from the lungs and stomach of the fetus from the first patient. To the authors’ knowledge, this is the first clinical description of FMP associated with S. maltophilia in the USA. The aetiopathogenesis of placentitis induced by this micro‐organism and its relevance as an emerging pathogen in equine reproduction remains to be further elucidated.
ISSN:0957-7734
2042-3292
DOI:10.1111/eve.13310