Sick cat... any experience with histoplasmosis?

Dart-frog

Chirping
Nov 26, 2019
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25
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Hi everyone! I've been passively reading and learning from all of you since I got my chickens 6 months ago. They were rescue chickens and they came from a dire, dirty environment. Since joining me, they have been thriving... seem healthy and happy and bringing me lots of joy.

Today is Tuesday. On Friday night, one of my cats started acting lethargic. Saturday he wouldn't get out of bed. Saturday night he was wheezing. No appetite whatsoever. Sunday morning he had developed a slight limp on the left rear leg. Sunday evening his breathing sounded like a percolator. I took him to emergency vet.

Emergency vet did x-rays. Found something unusual in the lungs. Radiologist consult felt that it was likely fluid rather than a mass. While we were waiting, he seemed uncomfortable on his left front leg. By the time the vet came back to tell us about the radiologist's report, he could not stand on the front leg at all (as if it were numb- no pain, rather just no feeling).

Monday we went to my regular vet. He needed supplemental oxygen on and off throughout the day. Left legs never improved- rear limp, front paw was completely useless. Monday night vet suggested hospitalization to make sure he didn't "crash." I drove him to an animal hospital. (This means that at this point, 3 vets had seen him and none could make a diagnosis.) Picked him up this morning and drove him to a fourth vet who specializes in internal medicine. He is considering a couple of theories- trauma to spine causing nerve damage; growth on lung pressing on spine; fungal infection such as histoplasmosis. I am, however, outside the endemic area (in West central Florida near Tampa).

His symptoms so far include (in order of appearance):
Loss of appetite
Lethargy
Left rear limp
Wheezing
Abnormal breathing noises
Left front limp/paw paralysis distal to elbow
Labored, fast breathing
Elevated heart rate (+100bpm at vets office)
Elevated temperature (104° F)
Enlarged spleen (seen in x-ray)
Left lung shows something unusual but unclear if it is fluid or mass. Not distributed, rather condensed in left lung.
Bloodwork revealed slightly elevated WBC. No eosinophils.
Today, I noticed that he was staring into space. I moved my fingers in front of his visual field and got no reaction at all. However, his pupils do dilate with light exposure.

Has anyone ever dealt with anything like this before???? He seems to be deteriorating so quickly... last Thursday he was completely fine. He does go outside occasionally and has interacted with the chickens. I'll try to attach a couple of pictures. Any ideas (even just guesses) would he greatly appreciated... even just pointing me in a direction to look would be great!

Thanks SO MUCH!!
 

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Thanks @dawg53 I really appreciate the link and information you found. I'll share this with the vet. I wonder if anyone out there has had any pets diagnosed with this in the past? The other vets said "that's too rare" or "totally unlikely in Florida." But if it walks like a duck and quacks like a duck...

I've got to learn more about this- I don't know if all chickens inherently carry this or if it would mean that I have an active infection in my flock...?

Thanks again so much! I'm currently waiting at the vet for ultrasound results and so I really appreciate the quick response!!

Christina
 
Just a quick update. The internal specialist vet is still confused. The ultrasound revealed consolidated tissue in the left lung that makes him think that the lung is collapsed. A collapsed lung wouldn't normally account for the limping, though. He said he didn't find much on the way to support the idea that fluid is present (at least not significantly). Just wanted to share this one additional diagnostic in case it gives anyone an idea.
 
It certainly looks like a fungal pneumonia on the radiograph. An aspirate of the consolidated lung tissue may show the cause on cytology. With the cat in such poor condition I would immediately start antifungal treatment ASAP pending further lab results. Antifungals are hard on the liver so liver enzymes must be monitored. As bad as kitty sounds I recommend starting treatment before results come back.
Best of luck.
 

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