Presentation
Rectal bleeding and fecal incontinence.
Patient Data
Irregular wall thickening in the middle and lower rectum with infiltration to mesorectum and the levator ani muscle, associated with perirectal and internal iliac adenopathies due to known adenocarcinoma. A right renal lesion with characteristics suggestive of clear cell carcinoma as a synchronous tumor.
Confirmed with histopathological study.
Rectal tumor biopsy
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Conventional type invasive adenocarcinoma, moderately differentiated.
Case Discussion
The presence of two primary cancers in the body is a rare event.
The existence of asymptomatic renal tumors has been portrayed in up to a 4% of colorectal cancer presenting in most cases as an imaging finding in the preoperative study.