History of prostate cancer. Research protocol. PELVIS:PROSTATE:Prostate Size: 5.1 x 4.1 x 3.3 cm (transverse by CC by AP)Peripheral Zone: Again seen is a dominant lesion in the right peripheral zone extending from the mid gland to the apex with decreased T2 signal, restricted diffusion, and early arterial enhancement. The lesion measures 11 x 8 mm in maximum axial dimension.Central Gland: Mild changes of benign prostatic hyperplasia.Seminal Vesicles: No evidence of seminal vesicle in vision.Extracapsular Extension: Along the posterolateral aspect of the mass, there is extensive abutment of the prostate capsule with apparent thickening of the capsule and indistinct margins suspicious for extracapsular extension (series 401 image 12). This approaches but does not definitively involve the right neurovascular bundle which runs immediately superior to the tumor in this region.BLADDER: No significant abnormality noted.LYMPH NODES: No pelvic lymphadenopathy.BONES, SOFT TISSUES: Redemonstration of an ovoid mass extending from the obturator foramen into the proximal thigh between the pectineus and adductor brevis muscles which measures 2.6 x 2.0 x 4.3 cm. The lesion is isointense to muscle on T1, T2 hyperintense, and a heterogeneously enhancing on the postcontrast images.There is incompletely evaluated peripherally enhancing focus within the right femoral neck seen on the large field-of-view images.OTHER: No significant abnormality noted.
1.Stable appearance of 1.1 cm lesion in the right peripheral zone mid gland and apex compatible with tumor. There is suspected extra prostatic extension posterolaterally.2.Incidental note of a enhancing heterogeneous mass in the proximal right thigh as described above possibly representing a peripheral nerve sheath tumor.3.Indeterminate enhancing focus in the right femoral neck. Consider dedicated imaging as clinically warranted.