Presentation
Acute exacerbation of chronic abdominal pain. Patient also has early satiety and weight loss.
Patient Data
Large, heterogenous, solid and necrotic exophytic mass arising from the mid to lower pole of the left kidney. There is also a central calcification within the mass. There is a small amount of free fluid adjacent to the mass.
There is a conglomerate of enlarged retroperitoneal lymph nodes. There is encasement of the left renal artery by a retroperitoneal lymph node.
Case Discussion
This is a case of sarcomatoid renal cell carcinoma.
The patient underwent a left renal mass and periaortic lymph node biopsy by interventional radiology. Gross pathology of the renal mass demonstrated irregular, soft tan tissue. Both the lymph node and renal mass were positive for AE1/AE3, C-KIT, and PAX-8. These findings support the diagnosis of a sarcomatoid renal cell carcinoma.
Given his age, the patient denied chemoradiation and/or surgery.
Co-author: David Le
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