Microhepatica in a 7yr old, FS, Shih Tzu with a splenoazygos shunt

Case Study

Microhepatica in a 7yr old, FS, Shih Tzu with a splenoazygos shunt

A 7-year-old SF Shih Tzu with a history of a porto-caval PSS shunt that was well managed with medical therapy was presented for evaluation of with lethargy and decreased appetite.

A 7-year-old SF Shih Tzu with a history of a porto-caval PSS shunt that was well managed with medical therapy was presented for evaluation of with lethargy and decreased appetite.

DX

Microhepatica with a splenoazygos shunt

Sonographic Differential Diagnosis

Swollen kidneys.
Bladder calculi.
Microhepatica. Double aorta sign. This is consistent with splenoazygos shunt.
Prominent pancreas.

Image Interpretation

The liver was persistently subnormal in size. Double aorta was noted in this patient. This is consistent with splenoazygos shunt.

The urinary bladder, trigoneand pelvic urethra presented normal wall thicknesses with anechoic urine and normal tone. Multiple bladder calculi were noted and were non obstructive. The largest calculus measured 0.34 cm. This is likely a biurate given the patient’s history. No evidence of inflammatory or neoplastic changes were noted. The ureters were not visible and therefore considered normal.

The kidneys were both swollen. Medullary echogenicity differed distinctly from that of the cortex and no evidence or dilation could be seen. The capsules were acceptably uniform without dramatic irregularities. Pelvic calculus was noted in the left kidney and measured 0.86 cm. The left kidney measured 5.25 cm. The right kidney measured 4.74 cm with pelvic calculus that measured 0.43 cm.

The pancreas was hypoechoic, mildly enlarged and slightly irregular measuring 1.07 cm.

Outcome

I strongly recommend surgical consultation at this point in this patient. Given the dropping albumin and low BUN. Medical therapy may not be adequate in this patient for long term management.

Clinical Differential Diagnosis

Progression of liver shunt
Hepatopathy – cirrhosis, chronic hepatopathy, neoplasia
Pancreas – pancreatitis, neoplasia

Patient Information

Patient Name : Roxy Rice
Gender : Female, Spayed
Species : Canine
Type of Imaging : Ultrasound
Liz Wuz Here : Yes

Clinical Signs

  • Anorexia
  • Lethargy

Images

r2r7

Clinical Signs

  • Anorexia
  • Lethargy
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