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Normal Male Pelvis MRI Report Template (Non-Prostate Protocol)
Normal general male pelvis MRI report template: bladder, seminal vesicles, prostate overview without PI-RADS grading, rectum and anal canal, pelvic lymph nodes, osseous pelvis and hips and the pelvic floor, for perianal fistula, pelvic pain and rectal or soft tissue indications.
EXAMINATION: MRI of the pelvis [with and without / without] intravenous contrast. CLINICAL HISTORY: [indication, e.g. “Chronic pelvic pain, evaluate for pelvic mass” / “Perianal fistula, pre-operative mapping” / “Pelvic soft tissue mass seen on ultrasound”] COMPARISON: None available. TECHNIQUE: Multiplanar, multisequence MRI of the pelvis from the iliac crests to the perineum on a [1.5T / 3T] system, including axial and coronal T1-weighted, axial, coronal and sagittal T2-weighted, axial diffusion-weighted imaging with ADC map and axial fat-suppressed T2-weighted sequences. [Following the administration of x mL of gadolinium-based contrast, dynamic and delayed axial fat-suppressed T1-weighted images were obtained.] [Oblique axial and coronal planes were angled to the anal canal.] FINDINGS: Bladder: Moderately distended with a normal wall thickness. No wall thickening, filling defect or diverticulum. The distal ureters and ureterovesical junctions are unremarkable. Prostate and seminal vesicles: The prostate is normal in size, measuring approximately [x] x [x] x [x] cm (volume [x] mL), with a normal zonal anatomy and no focal signal abnormality on this non-dedicated protocol. The seminal vesicles are symmetric with normal T2 signal. No periprostatic or ejaculatory duct abnormality. Rectum and anal canal: Normal wall thickness and signal of the rectum and anal canal. The internal and external anal sphincters and the levator ani are intact. No perianal or perirectal fistula, abscess or inflammatory change in the ischioanal fossae. No mesorectal mass or lymphadenopathy. Lymph nodes: No enlarged pelvic lymph node. The visible external and internal iliac, obturator, presacral and inguinal nodes are normal in size (short axis under 1 cm) and morphology. Peritoneum and pelvic soft tissues: No free fluid, peritoneal nodularity or soft tissue mass. Normal pelvic sidewall musculature. Vasculature: Normal flow voids in the iliac vessels. No pelvic venous varices. Osseous pelvis and hips: Normal marrow signal throughout the pelvis, sacrum and proximal femora. No fracture, focal lesion or sacroiliac joint abnormality. The hip joints are congruent without effusion. Groins and perineum: No inguinal hernia or scrotal extension of pathology on the included images. Normal perineal soft tissues. Abdominal wall and musculature: Unremarkable. Enhancement: [No abnormal enhancement.] IMPRESSION: 1. Normal MRI of the male pelvis. No pelvic mass, inflammatory process or lymphadenopathy. 2. [No perianal fistula or abscess.]
Dictation notes
- Say what the prostate protocol was not: a general pelvis MRI has no high-resolution small-field T2, no dedicated DWI and usually no endorectal-grade resolution, so a prostate comment is descriptive only and a PI-RADS category is not assigned — recommend a dedicated multiparametric prostate MRI if a lesion is suspected.
- For perianal fistula indications, report in the St James's University Hospital grades (1 simple intersphincteric, 2 intersphincteric with abscess or secondary track, 3 transsphincteric, 4 transsphincteric with abscess or track in the ischioanal fossa, 5 supralevator or translevator) with the internal opening given by clock position in the anatomical (lithotomy) position.
- Measure the seminal vesicles and comment on T2 signal: symmetric low T2 signal is hemorrhage, ejaculatory duct obstruction or post-radiation change, and an absent seminal vesicle pairs with ipsilateral renal agenesis.
- Pelvic nodes are called by morphology as well as size — a round node with a lost fatty hilum, restricted diffusion or necrosis under 1 cm is still suspicious in the right clinical setting; give the short axis and the station.
- The marrow is read on T1: a focal lesion that loses the fatty marrow signal on T1 is the finding, and sacral insufficiency fractures (H-shaped STIR edema in a patient after radiation or with osteoporosis) are a common cause of pelvic pain hiding in a “normal” study.
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