What is the overall PI-RADS category and why?
Lesion overall PI-RADS category is 5 because lesion size is ≥ 15mm.
Findings:
Quality: mild geometric distortion on DWI, does not compromise diagnostic confidence
Prostate size: 47 x 32 x 70 mm (CC x AP x ML) ≈56 mL.
Haemorrhage: none
Peripheral zone (PZ): slightly heterogeneous high signal, faint linear/wedge-shaped hypointensities
Transition zone (TZ): moderate heterogeneity, some BPH nodules, focal finding as below:
Focal lesion #1:
- location: right apical and mid gland anterior transition zone (TZa) extending to the left
- lesion size: 21 x 22 x16 mm
- T2w: circumscribed homogeneous, hypointense, with a small area of capsular contact - category 5/5
- DWI: focal slightly hyperintense on DWI (b1000) and markedly hypointense on ADC - category 3/5
- DCE: focal early enhancement - positive
Prostate margin: a small area of capsular contact
Overall PI-RADS category: 5
Neurovascular bundles: not involved
Seminal vesicles: not involved
Lymph nodes: multiple small oval iliac lymph nodes (up to 5 mm size, fatty hilum, smooth margins)
Pelvic bones: no osseous metastases
Other pelvic organs: normal
Impression:
A highly suspicious lesion in the right anterior transition zone (TZa) - PI-RADS 5.
A prostate biopsy was recommended.