Fecal material
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Fecal material | |
---|---|
Diagnosis in short | |
A food particle and a tubular adenoma. H&E stain. | |
| |
LM | plant matter - has cell walls, meat - skeletal muscle without nuclei, microorganisms (bacilli, cocci), +/-colorectal mucosa |
LM DDx | necrosis |
Gross | soft material, amorphous, friable |
Site | cecum, colon, rectum |
| |
Clinical history | poor bowel preparation |
Prevalence | relatively common |
Endoscopy | polypoid lesion |
Prognosis | benign |
Clin. DDx | gastrointestinal polyp |
Fecal material, also fecal matter, is poo. It is seen in gastrointestinal pathology.
General
- Common.
- Associated with poor bowel preparation.
- People on a low-fibre diet seem to have less of 'em.[1]
- Endoscopists go after anything that is polypoid and that may be nothing more than poo.
Gross
- Soft amorphous material.
- +/-Friable.
DDx:
- Colonic cast - membranous appearance; described as airbladder of fish-like.[2]
- Arises in colonic ischemia[3] - typically post-AAA repair or after colorectal surgery.[4]
Microscopic
Features:
- Plant material:
- Yellow staining chicken wire-like material - may be linear.
- Thick cell walls often without cytoplasm and usually without a nucleus.
- Yellow staining chicken wire-like material - may be linear.
- Meat:
- Essentially ischemic skeletal muscle without inflammation.
- Eosinophilic material without nuclei and without inflammation.
- Honeycomb-like when fibres seen in cross-section.
- Eosinophilic material without nuclei and without inflammation.
- Essentially ischemic skeletal muscle without inflammation.
- +/-Microorganisms.
- +/-Inflammatory cells.
DDx:
Images
TA and plant material - intermed. mag.
Sign out
- Often ignored if colorectal mucosa is present.
Submitted as "Polyp", Cecum, Biopsy or Polypectomy: - Fecal material only. - NEGATIVE for definite colonic type mucosa.
Block letters
TRANSVERSE COLON, BIOPSY: - FECAL MATERIAL. - NEGATIVE FOR DEFINITE COLONIC MUCOSA IDENTIFIED.
Alternate
ASCENDING COLON ("POLYP"), REMOVAL: - CONSISTENT WITH PARTIALLY DIGESTED FOOD. - NEGATIVE FOR DEFINITE COLONIC MUCOSA.
Micro
The sections show a fragment of striated muscle without nuclei and without inflammation, with scant microorganisms. No colorectal mucosa is identified.
Rectum
RECTUM, BIOPSY: - FECAL MATERIAL. - NEGATIVE FOR DEFINITE RECTAL MUCOSA.
See also
References
- ↑ Liedenbaum, MH.; Denters, MJ.; de Vries, AH.; van Ravesteijn, VF.; Bipat, S.; Vos, FM.; Dekker, E.; Stoker, J. (Jul 2010). "Low-fiber diet in limited bowel preparation for CT colonography: Influence on image quality and patient acceptance.". AJR Am J Roentgenol 195 (1): W31-7. doi:10.2214/AJR.09.3572. PMID 20566777.
- ↑ Yoshiji, H.; Nakae, D.; Sugiya, R.; Mizumoto, Y.; Tsutsumi, M.; Hiriguchi, K.; Yokose, Y.; Sakurai, R. et al. (Feb 1994). "Spontaneous passage of a colon cast in the absence of abdominal aneurysm.". J Gastroenterol 29 (1): 80-3. PMID 8199700.
- ↑ Abe, S.; Yamaguchi, H.; Murono, K.; Kanazawa, T.; Ishihara, S.; Sunami, E.; Watanabe, T.. "Passage of a sigmoid colon cast in a patient with ischemic colitis.". Int Surg 99 (5): 500-5. doi:10.9738/INTSURG-D-14-00066.1. PMID 25216411.
- ↑ Erguney, S.; Yavuz, N.; Ersoy, YE.; Teksoz, S.; Selcuk, D.; Ogut, G.; Dogusoy, G.; Alver, O. (Aug 2007). "Passage of "colonic cast" after colorectal surgery: report of four cases and review of the literature.". J Gastrointest Surg 11 (8): 1045-51. doi:10.1007/s11605-007-0194-z. PMID 17564753.