
09/17/2025
Soft Tissue Case of the Month:
• 4 year old German Shepherd M/N
• Presented for lethargy, anorexia, abdominal pain
• Abdominal radiographs are suspicious for an abdominal mass in the region of the spleen.
What is your diagnosis?
Abdominal ultrasound showed abnormalities of the spleen.
The spleen is enlarged and hypoechoic, with diffuse dilated sinusoid, creating a “lacy” appearance. No blood flow is noted on color Doppler evaluation (small flashes of color superimposed over the spleen are from motion rather than true vasculature in the splenic parenchyma
These changes are consistent with a splenic torsion. In this condition, the spleen rotates on its vascular pedicle. The thin-walled splenic vein becomes occluded while the thicker walled splenic artery may still allow some blood to enter. Blood enters the spleen but cannot leave, causing splenic congestion and splenomegaly. On ultrasound the dilated splenic sinusoids result in an enlarged, congested, and hypoechoic spleen with minimal to no vascular flow. Doppler ultrasound is key in making this diagnosis.