64 yr. Old man with prior successful prostate cancer radiation treatment 3 yrs ago. Solar plexus pain. What organ if concern with cancer?

May be... After a successful rt for prostate cancer(pca), the patient will still require a lifelong f/u for possible rising psa after definitive rx; it's reasonable to do so every 6 months for the described one by repeating psa and with clinical assessment. Solar plexus pain is very unlikely related with pca. Instead, consider hypertension-related or idiopathic. Pca-related pain occurs in its late stage.