73-year-old male with rectal polyp near anal verge, new rectal adenocarcinoma Overall image quality: GoodPELVIS:PROSTATE/SEMINAL VESICLES: Nonspecific T2 hypointense focus in the right apical peripheral zone. BLADDER: No significant abnormality noted. LYMPH NODES: Lymph nodes in the perirectal space, within the mesorectal fascia: None.Lymph nodes outside the mesorectal fascia: None. BOWEL, MESENTERY: Rectal Tumor: A lesion is not clearly visualized although a crescentic region of asymmetric enhancement is noted at the level of the puborectalis muscle. Size: 1.6 x 0.7 cm (image 15/series 63)Tumor appearance on T2-weighted images: Not clearly visualized although the region measured above demonstrates enhancement at the level of the puborectalis muscle. Tumor location: Right rectal/anal wall. (For lower rectal tumors):Distance of the lower edge of the tumor to the anal verge (lower edge of the anal canal): 0Distance of the lower edge of the tumor to the pelvic floor (relationship of the tumor to the anal sphincter complex): extends up to the level of the sphincterCircumference of the rectum involved: 180Relationship and proximity of the tumor to adjacent structures (prostate, seminal vesicles): None.MRI T-stage: likely T2Tumor Distance to Mesorectal Fascia: Not applicable as this lesion is low and extends to the level of the puborectalis muscles. BONES, SOFT TISSUES: No significant abnormality noted.OTHER: No significant abnormality noted.
1.A rectal lesion is not clearly visualized. A crescentic region of enhancement is noted in the anus at the level of the puborectalis muscle that may represent the lesion in question2.Nonspecific T2 hypointense lesion in the right apical peripheral zone. Correlation with PSA is recommended. 