83 yr M, with h/o Prostate CA (on hormonal Rx w/ undetectable PSA)

PMH significant for CLL on BM Bx 9 yrs back (no current treatment).

Now presents w/ fatigue, unexplained wt. loss & anorexia.

CT: extensive abd. LAD.

FDG PET/CT scan is shown.

Most likely consideration is:

A. Widespread metastatic prostate ca

B. Peritoneal carcinomatosis

C. Peritoneal TB

D. Richter’s Transformation