Water Belly or Ovarian Cyst? AND Internal Layer? GRAPHIC PICS

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Mountain Lori

Chirping
11 Years
Apr 1, 2011
25
3
82
Alberta, Canada
EXTREMELY GRAPHIC! I have attached autopsy pictures at the end of this post to illustrate her condition. Look or don't look, but I felt, for the sake of informative discussion, it had to be done.

One of my girls developed a hugely swollen and squishy abdomen and lost all the feathers in that area. I researched the condition on here, but couldn't find a description or picture that exactly matched her condition. I did find some posts about draining fluid with a needle or catheter, but was unsure of how or where to insert the needle, as I didn't want to hit anything vital or cause more damage. I was going to start a post about this to see what I could do to help her, but unfortunately, I found her dead yesterday morning. And so I performed my first ever CHICKEN AUTOPSY to find out exactly what and where the mass was. I now know that I could have inserted the needle pretty much anywhere in her lower abdomen without hitting any organs, but the fluid WAS NOT free-floating as I had expected, but was encased in a sack of tissue like a water balloon - I wonder if I might have done more damage by inserting a needle to drain, and thus allowing the fluid to seep into her abdomen from the ruptured sack.

I don't cull my birds and so had no idea what a chicken looked like or is supposed to look like on the inside. This has been an eye-opening experience and I have several questions for you all.

First, as mentioned, the water was not free-floating in the abdomen. It was contained in a veined sack that was attached to the lower right side of the abdomen. When I cut through the abdominal wall, the sack rolled out like a water balloon, exposing the intestines and left oviduct, which were beneath. Smaller water sacks were beneath the main sack, but attached to the same structure. There was a tiny amount of creamy fluid (infection? no smell) within the abdomen, but barely - not as much as I would expect if it had been a massive infection. The sack itself contained clear, odorless fluid.

Crop, liver, spleen, gall bladder, gizzard all appear a normal healthy color - no spots, hard tissues, or off-colors. Crop and gizzard contents as expected for a healthy, feeding chicken. No sour smells and no sign of intestinal parasites. Heart is kind of odd (I think). It seems rather large and appears to bulge on the upper right side.

Ovaries functioning - BUT are they normal? Clusters of dozens of little yolks in various stages of development attached to ovary. Yolks everywhere. Yolks of various sizes passing through left oviduct - no sign of shell formation though. Several loose yolks encased in red tissue (kind of look like cherry tomatoes) of various sizes loose in abdomen. I'm not sure whether this was their original position, or if they rolled from their original location when the mass was released.

So my questions are:
1: Is this truly 'water belly?' I'm wondering because the water was encased in some type of structure and not free floating in the abdomen.
2: Could this tissue sac have been the right oviduct?

I've read that water belly or 'ascites' can be caused by a couple of things, including high altitude and unstable temperatures - puts too much strain on the heart which causes a build up of fluids, which leak from the liver into the abdomen. Large broilers and breeds developed for high egg production are especially susceptible and while there is no cure, the symptoms can be managed by draining the fluid regularly. But is that what this is?

3: Is the above statement accurate?
4: Is the shape of the heart a sign of congestive heart failure?
5: Is the fluid build up associated with the above?
6::Could this be an cyst in the oviduct?
7: If so, what causes this????
8: And what can be done about it?
9: Also: Might she have been an internal layer or is this normal egg development? If she was laying internally, what are the initial symptoms and what can be done?


NOTE: This was not easy for me - I love my girls - but I felt I needed to do it to help me learn to help them. She did receive a proper cremation following the autopsy.


I will never look at my favorite kitchen knife the same way again...
sad.png


WARNING: BELOW ARE EXTREMELY GRAPHIC PICTURES - I appreciate any comments on her condition.




This is what her abdomen looked like. This condition became noticeable rather suddenly - I'd say within a month.
84832_img_0001.jpg




This is a picture of her heart and liver, etc. Note the bulge on the upper part of the heart - congestive heart failure?
84832_img_0008.jpg



The next two images show the fluid-filled mass that was inside her abdomen:

#1: In place (before I cut through the abdominal wall). Note how it fills the entire abdominal cavity.
84832_img_0003.jpg



#2: After I opened the abdominal wall, the mass just rolled out like a water balloon. Note that it is enclosed is some type of tissue (right oviduct?) and attached to the lower right side of the abdomen.
84832_img_0011.jpg



The next several images show egg development.

There were a series of egg yolks of different sizes inside the left oviduct, but also several free-floating yolks throughout her abdomen. Not sure if these may have rolled out of position after I removed the intestines, or if they truly were scattered about like this.
84832_img_0017.jpg



This picture shows the water balloon, the left oviduct (upper right) with yolk enclosed, and several free-floating cherry red yolks that were found throughout the abdomen (in places where I wouldn't think they could reach the oviduct)
84832_img_0021.jpg



This, I'm assuming, is a mass of yolks developing in her ovaries. Is this normal production? Until recently, this hen laid an egg every day - sometimes twice a day.
84832_img_0022.jpg



This image is the mass after it was drained. The fluid drained was clear, odorless and a little thicker than water.
84832_img_0024.jpg



Thanks for any feedback.
 
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This is persistent cystic right oviduct. The right ovary and oviduct do not develop in chickens (and other birds); this means that adult chickens have only left ovary and oviduct. In some chickens, however, the regressed right oviduct becomes cystic and filled with clear fluid. The size of the cyst can be very small or it can reach several centimeters in size. We see this conditions in commercial and backyard chickens. I hope this helps.

Avian Pathologist
 
I was a nurse for 10 years (for humans) and have a couple of opinions on what happened with you chicken. What you found looks much like an very large ovarian cyst. They are absolutely no fun to deal with in humans, let alone chickens. when they grow big enough and no room is left it start causing the tissue it presses against to die off. The heart looked like it had built up muscle from working to pump enough blood through to maintain her body and the growth. The vessels started growing around to help maintain the structure even though it was not good for the body.

From the looks of things, draining the cyst would not have done good things for this girl. Her heart looked damaged enough that she would most likely have not gone on for much longer. And, if any tissue had started to die off that would have been an infection that would have most likely not allowed her very long to live either.

I love my chickens to, and I would do whatever it took to find out the cause of a bad thing in case it was something that could harm more than just one.
 
Lori, I really appreciate the fact that you went ahead and did a necropsy and shared the pictures. I did my first one last week. Not easy.
I wish in the future that more people perform necropsies and share the pictures because there is so little information out there about chickens.
I have certainly learned alot from your pictures, esp about tumors.
Thankyou
 
Well, I did some more research and have determined that my girl definitely had what is called a "cystic oviduct." What's more, I found out that this is a common result of a breakout of Infectious Bronchitis. This concerns me. Although I haven't noticed any real signs of infection - the occasional sneeze at night, etc. - but no really obvious signs of distress, some of my eggs do look like the shells in this link (bottom of page 2): http://en.aviagen.com/assets/Tech_Center/LIR_Tech_Articles/Indian-River-Be-Smart-IBV.pdf.

I have another link I'd like to share with you all regarding the crazy amount of eggs I found inside her (pages 34-35): http://www.spottedcowpress.ca/chapters/06Abnormalities.pdf. It says that, "it is well documented that ad libitum-fed breeder hens are very prone to developing excessive follicle development."

So it looks like I have a couple of things to figure out here - like whether I've had an outbreak of IBV (and what to do about it), the cause of the 'phantom eggs' that I found inside her, and how to drain or treat cystic ovaries. I have a couple of other girls with missing feathers in that area as well and assumed I had a feather-picker or a molt. None are hugely swollen like this girl was though.

Apparently, draining the cyst provides relief and they can live a fairly normal life, but I can't find info on how to do that safely myself. Also, I'm thinking by the time it's large enough to notice, damage to the other organs has already been already done. I will also have to check my feed for ad libitum. I feed layer ration, a little scratch, some kitchen leftovers, occasional green treats (cabbage, parsley, kale, whatever) and freerange in the summer (native grasses, forest foliage, and of course... bugs), but so far this year, they've only been able to freerange for about 2 weeks now.


More research and feedback is needed.

Thanks all.
 
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I'm starting to think that a buff orp I had for about 6 years had this problem. For 5 years, I drained her abdomen about every 3-4 months, and got clear, odorless fluid out. After the draining, she would be fine, until her abdomen filled up again. She never laid an egg and was always sort of puny, so she lived in a different pen from the rest of them. She was a sweetheart.
Interesting.
I just discovered another hen of mine today (black australorp) who has a very swollen abdomen. I might have to drain her. But her comb is smaller than the others, and she's always had an expiratory wheeze for years.....so maybe her heart isn't so great, and she has ascites. I wonder if there's any way for us to know the difference between this and a huge ovarian cyst?
I actually had another black australorp a few years ago who had a swollen abdomen, and I drained her, but her's was bright green fluid. I think she had peritonitis. She died shortly after that.
My hens are now 8 years old, so I guess I should be expecting alot of these problems.........but I still don't like it, and it still makes me sad! I had another one drop dead a couple weeks ago.
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Anyhow.......thanks for posting these pictures and your experience with this.
 
This is persistent cystic right oviduct. The right ovary and oviduct do not develop in chickens (and other birds); this means that adult chickens have only left ovary and oviduct. In some chickens, however, the regressed right oviduct becomes cystic and filled with clear fluid. The size of the cyst can be very small or it can reach several centimeters in size. We see this conditions in commercial and backyard chickens. I hope this helps. 

Avian Pathologist


Welcome to BYC! If you don't mind, could you look at some necropsy pictures?

-Kathy
 
Thank you for the pictures.

Yolks will be found in various stages of development. The shells are formed last. Beyond that I cannot help you. But I will forward this link to a friend who has been dealing with "apparently" the same issue.

It would be nice to have an avian vet weigh in.
 

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