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Home | Resources | Rectal mass

Rectal mass

by Chris Nickson, Last updated May 31, 2012

Overview

  • Rectal masses may be intraluminal, mural or palpable through the rectum but arising from outside of it.

Causes

Rectal

Mural origin

  • rectal carcinoma
  • rectal polyp
  • hypertrophied anal papilla
  • diverticula phlegmon
  • Prostatic or cervical malignancy (direct extension)
  • amebic granuloma

Intra-luminal origin

  • sigmoid colon carcinoma (prolapse into pouch of Douglas)
  • foreign body
  • feces

Extra-rectal origin

  • endometriosis
  • pelvic abscess or sarcoma
  • metastatic deposits in pelvis (Blumer’s shelf)
  • Uterine or ovarian malignancy
  • Prostatic or cervical malignancy (direct extension)

References and Links

  • Talley NJ, O’Connor S. Clinical Examination: A Systematic Guide to Physical Diagnosis. MacLennan and Petty. 3rd edition, 1998.

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About Chris Nickson

An oslerphile emergency physician and intensivist suffering from a bad case of knowledge dipsosis. Key areas of interest include: the ED-ICU interface, toxicology, simulation and the free open-access meducation (FOAM) revolution. @Twitter | + Chris Nickson | RAGE | INTENSIVE| SMACC

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