4584. The Syrian hamster owner feels a "blueberry" lump in the "stomach area" of his 13-month female Syrian hamster

THE SYRIAN HAMSTER HAS A 'BLUEBERRY' LUMP INSIDE HER BLADDER AREA. What to do?

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VET CASE. Hamster lumps. What to do? 

The Syrian hamster owner feels a "blueberry" lump in the "stomach area" of his 13-month female Syrian hamster. The hamster ate less for the past few days. He was very worried. He took leave to consult me on Thursday 2 Feb 2023.

The Syrian hamster does not bite. So, it was easier for me to feel (palpate) her abdomen for the lump. My assistant Hsu was kind enough to video my examination using her Samsung Galaxy Fold 4. Very sharp videos unlike my Canon R5 which has difficulty in focusing, producing blurry videos.

You can see the "hair loss" on the left belly area of around 1 cm across. It is not obvious during physical examination, but on review of one of the 2 videos, you can see that the hamster had been licking this belly area.

What is the "blueberry" lump in the abdomen? I palpated a firm globular lump in the bladder area of around 1 cm across or the size of a small-sized grape. What is it?

Possible causes are:
1. Bladder stone or tumour or infected full bladder.
2. Splenic tumour.
3. Close pyometra (uterus swollen with pus).

4. Abdominal tumour.

As the hamster released much urine (1 ml or more) during my palpation (see one of two videos), the retained urinary bladder could be the "blueberry" lump in the stomach area.

Antibiotics and painkiller for next 10 days first. If  the lump is still present, I will do X-rays and ultrasound. 

UPDATES AT:
https://2010vets.blogspot.com/2023/02/4584-syrian-hamster-owner-feels.html