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The difference between lymphoma and chyle

Remember that just because you see lymphocytes in an effusion doesn’t automatically mean it’s lymphoma. 


The case on the left here is lymphoma from a pleural effusion. We...

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The carcinoma vs. reactive mesothelial cell conundrum

One of the most commonly misinterpreted cells when it comes to effusion cytology is the reactive mesothelial cell


Reactive mesos can look wild! Things we normally consider criteria of...

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An ER case with a surprise finding in the effusion

Coffeehouse Case Spotlight time! 


This super interesting case was posted back in 2018 by Dr. Jeff Smith. A 3 year old Yorkie was found to have pleural and abdominal effusion as well as...

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👀 Look what was in this dog's chest...

A 6 year old MN Pit Bull rescue presented to the ER for increased respiratory rate. On presentation, he was dull mentally and febrile. He also was noted to have joint effusion. Chest radiographs...

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One of my favorite effusion cases EVER

What is the most interesting cavity effusion case you’ve seen in practice?


I’ve seen a lot of cool ones, but this is one of my favorites. Pleural effusion in a 4 year old hunting...

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Effusions: The 3 most important components

These three components are most important in evaluating and classifying cavitary effusions. 


Total protein: The total protein of the effusion is part of how we classify effusions as...

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