Hi everyone, I’m looking for some advice/opinions about my cat.

Signalment:

- Cat, female spayed, ~9 years old

Acute episode (March):

- Sudden onset of vomiting (more than 10 episodes over 2 days: bile + undigested food)

- Became anorexic

- No diarrhea, normal urination

Clinical exam findings:

- Mild depression

- Fever (39.2°C)

- ~6–7% dehydration

- Painful abdomen

- Palpable large, firm, irregular abdominal mass (mid-caudal abdomen)

Radiographs:

- Loss of abdominal detail in caudal abdomen

- Suspected irregular mass in the region of the bladder / caudal abdomen

- Stomach not distended

- Diffuse intestinal gas

- Formed feces in colon

Bloodwork:

- Mild metabolic acidosis

- Hemoconcentration (consistent with dehydration)

- Mild electrolyte imbalances (low sodium, low calcium)

- Elevated lactate

- Mild hyperglycemia (likely stress-related)

- Triglycerides slightly elevated

Initial assessment:

- Suspected abdominal / bladder mass (origin unclear)

Clinical course:

- From the day after the first visit, the cat resumed eating normally and has had regular bowel movements since

- Currently clinically stable

Follow-up:

- Ultrasound performed yesterday: mass confirmed, but origin unclear

- Waiting for official report

- Vet mentioned extended mass with possible lymph node involvement

- If neoplastic, may not be surgically operable

- Recommended: echocardiogram + anesthesia + CT scan for further evaluation

-–

Main questions:

- Does this presentation sound more consistent with lymphoma vs carcinoma vs something else?

- Is it common for a cat with a significant abdominal mass to be clinically stable?

- Would you proceed with CT under anesthesia in this situation?

Thank you in advance.