Case Study

Left adrenal mass with phrenic vein and vena caval invasion in a 13 year old M Corgi

A 13-year-old intact male Corgi was presented for progressively taking longer time to pass stool and tenesmus.

Image Interpretation

Left adrenal in this patient created a mass 4.57 x 1.37 cm cranial; 1.48 cm caudal with phrenic vein invasion as well as invasion of the vena cava to the level of the liver; invasion is 4 x 2 cm. Expansion of the vena cava also noted. A large lipoma was noted in the pelvic inlet. The prostate was severely enlarged, nodular and irregular

DX

Adrenal mass with naval invasion. Large lipomatous-type mass in the pelvic inlet. Minor prostatic enlargement

Outcome

The immediate difficulty defecating is likely owing to the lipomatous-type mass in the pelvis. However, vague clinical signs are likely owing to the adrenal mass which is most consistent with pheochromocytoma; possible adenocarcinoma. Serial blood pressures are recommended. 3-view chest radiographs are also warranted if not already performed.

Clinical Differential Diagnosis

Prostate – benign hyperplasia, neoplasia, prostatitis, cystic disease
Colon – neoplasia, stenosis, colitis
Perineal hernia
Pelvic canal – neoplasia, abscess, granuloma