https://www.vetsurgeon.org/f/clinical-questions/20419/malassezia-as-a-cause-of-pyothorax---you-re-kidding We are currently treating a young cat with a pyothorax. It was initially seen by our OOH provider and 200ml of pus drained and was given a Convenia injection. I saw it the next day and withdrew another 40ml pus, a sample of which I sent for culture directen-USTelligent Community 10https://www.vetsurgeon.org/thread/123080?ContentTypeID=1Wed, 22 Oct 2014 11:45:45 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:232347bd-a646-4b54-92db-0fb702bd679dMartin Atkinson<p>[quote user=&quot;Stephen Courtney&quot;]If you are worried about a fungal pyothorax the cytology of the exudate would be spectacular - seen crypto before in an import - but crypto a much larger organism than malassezia[/quote] I did cytology in house and the product of the thoracocentesis was packed with neutrophils and numerous gram +ve cocci no yeast or crypto seen!</p> <p> It is almost certain that despite preparation of the site the sample was contaminated by Malassezia from the skin or contamination in the lab but I just wondered if anyone else had come across this before.</p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/123078?ContentTypeID=1Wed, 22 Oct 2014 11:40:01 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:244b636d-9e0d-4844-841f-a89173d22711Martin Atkinson<p>[quote user=&quot;Michael Woodhouse&quot;]</p> <p>[quote user=&quot;James Laidlaw&quot;]</p> <p>More likely convenia affecting culture result surely?!</p> <div style="clear:both;"></div> <p>[/quote]</p> <p>My thoughts exactly.</p> <div style="clear:both;"></div> <p>[/quote]Well yes obviously the Convenia could have prevented bacterial growth on culture but that doesn&#39;t explain where the Malassezia came from.</p> <p>&nbsp;</p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/123063?ContentTypeID=1Wed, 22 Oct 2014 10:15:36 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:9aa3761e-449c-4531-9658-0650b79df977Michael Woodhouse<p>[quote user=&quot;James Laidlaw&quot;]</p> <p>More likely convenia affecting culture result surely?!</p> <div style="clear:both;"></div> <p>[/quote]</p> <p>My thoughts exactly.</p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/123061?ContentTypeID=1Wed, 22 Oct 2014 10:07:44 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:1cebe753-ce9e-4e4f-b9ca-a37e77ca8ba6Stephen Courtney<p>Fungal culture media have antibiotics in don&#39;t they - so even slight contamination might allow the yeast to proliferate. It could have come from anywhere, including lab error.</p> <p>If you are worried about a fungal pyothorax the cytology of the exudate would be spectacular - seen crypto before in an import - but crypto a much larger organism than malassezia</p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/123059?ContentTypeID=1Wed, 22 Oct 2014 09:58:05 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:a179168a-67e5-46d6-a4b3-4ba3fbf9b28dJames Laidlaw<p>More likely convenia affecting culture result surely?!</p><div style="clear:both;"></div>