Chameleon anatomy - something strange on xray

Amanda1801

New Member
Hi there,

I was wondering if anyone had any knowledge, or could point me in the direction of any publications detailing chameleon anatomy?

I've had my veiled chameleon for about 18 months, he's now around 2 years old.

He came to me with advanced MBD with severe pathalogical fractures and some kind of systemic infection. After a lot of treatment, he was fine. His xrays showed huge improvement in his bone density and he was exhibiting normal behaviours.

This October, he started showing signs of being unwell. The first thing that I noticed, was that he stopped producing faeces. He quickly then started to sleep during the day. We treated him symptomatically to begin with, and while he was passing faeces with the aid of a laxative, he then stopped eating/drinking/passing faeces and urates. He's been eating maybe once a week for the last 3 weeks, and drinking occasionally.

He's had further xrays done as something could be felt in his abdomen, although this appeared to be normal faeces.

However, these most recent xrays have shown something odd in his cranio-ventral chest region, that has not previously shown on any other xrays. All the vets and myself (I'm a veterinary anatomist) are stumped as to what it is, and his case has been referred to a reptile specialist. The specialist came back to us very confused, and requested more xrays from different views. These were taken with the chameleon having to be sedated, and have been sent back to the specialist.

He's showing improvements after having got some electrolyte solution into him. He's started eating again today too, but he's still very much not right.
 
I'll see if I can find anything that might help...probably not though since we're lucky to find radiographic references just for normal with the more unusual species. I'll still look though.

Any chance you could post the rads? I'd like to see the weirdness :)
 

A complete stab in the dark here, but could there possibly be kidney damage from all his past problems that is showing up as edema? One place edema shows up is the neck or chest. Is the image bright white? A possible calcification of a structure or calcium deposit?
 
I'll see if I can find anything that might help...probably not though since we're lucky to find radiographic references just for normal with the more unusual species. I'll still look though.

Any chance you could post the rads? I'd like to see the weirdness :)

I tried on Saturday at work, but between the digital xray and the ipad, my technological abilities failed me. I'll email the vet and ask him to forward them to me!


What it is, is something actually... below the heart, something long and thin almost! Whatever it is, it's distinctly separate from his heart/trachea/oesophagus and associated structures.

A complete stab in the dark here, but could there possibly be kidney damage from all his past problems that is showing up as edema? One place edema shows up is the neck or chest. Is the image bright white? A possible calcification of a structure or calcium deposit?

It has a definite structure to it. It looks like (the only way I can describe it!) a surf board shaped organ. There's no sign of calcification, it's showing up the same kind of radiopacity as an organ. Theories so far have been varied but few; one person suggesting 2 hearts (!!) and another suggesting a thymus or thyroid gland tumour.

I'll try and get a copy of the xrays this week, and hopefully the specialist will get back to us soon as well!
 
However, these most recent xrays have shown something odd in his cranio-ventral chest region, that has not previously shown on any other xrays. All the vets and myself (I'm a veterinary anatomist) are stumped as to what it is, and his case has been referred to a reptile specialist. The specialist came back to us very confused, and requested more xrays from different views. These were taken with the chameleon having to be sedated, and have been sent back to the specialist.

There is a gular pouch (an inflatable air-sac) in some species, including Ch. calyptratus, in that area that connects to the trachea just behind the larynx. Could this be what you are seeing, perhaps filled with fluid?

Chris
 
There is a gular pouch (an inflatable air-sac) in some species, including Ch. calyptratus, in that area that connects to the trachea just behind the larynx. Could this be what you are seeing, perhaps filled with fluid?

Chris

Hmm it could be...

It seems to be more.. like on the ventral chest wall though, rather than attached to anything. I havent seen the lateral views taken while he was sedated yet though, so I can't say for sure....

Definitely something to consider though, thanks!
 
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