Difference between revisions of "Fecal material"
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**People on a low-fibre diet seem to have less of 'em.<ref name=pmid20566777>{{Cite journal | last1 = Liedenbaum | first1 = MH. | last2 = Denters | first2 = MJ. | last3 = de Vries | first3 = AH. | last4 = van Ravesteijn | first4 = VF. | last5 = Bipat | first5 = S. | last6 = Vos | first6 = FM. | last7 = Dekker | first7 = E. | last8 = Stoker | first8 = J. | title = Low-fiber diet in limited bowel preparation for CT colonography: Influence on image quality and patient acceptance. | journal = AJR Am J Roentgenol | volume = 195 | issue = 1 | pages = W31-7 | month = Jul | year = 2010 | doi = 10.2214/AJR.09.3572 | PMID = 20566777 }}</ref> | **People on a low-fibre diet seem to have less of 'em.<ref name=pmid20566777>{{Cite journal | last1 = Liedenbaum | first1 = MH. | last2 = Denters | first2 = MJ. | last3 = de Vries | first3 = AH. | last4 = van Ravesteijn | first4 = VF. | last5 = Bipat | first5 = S. | last6 = Vos | first6 = FM. | last7 = Dekker | first7 = E. | last8 = Stoker | first8 = J. | title = Low-fiber diet in limited bowel preparation for CT colonography: Influence on image quality and patient acceptance. | journal = AJR Am J Roentgenol | volume = 195 | issue = 1 | pages = W31-7 | month = Jul | year = 2010 | doi = 10.2214/AJR.09.3572 | PMID = 20566777 }}</ref> | ||
*Endoscopists go after anything that is polypoid and that may be nothing more than poo. | *Endoscopists go after anything that is polypoid and that may be nothing more than poo. | ||
DDx: | |||
*Colonic cast - membranous appearance. | |||
**Arises in [[colonic ischemia]].<ref>{{Cite journal | last1 = Abe | first1 = S. | last2 = Yamaguchi | first2 = H. | last3 = Murono | first3 = K. | last4 = Kanazawa | first4 = T. | last5 = Ishihara | first5 = S. | last6 = Sunami | first6 = E. | last7 = Watanabe | first7 = T. | title = Passage of a sigmoid colon cast in a patient with ischemic colitis. | journal = Int Surg | volume = 99 | issue = 5 | pages = 500-5 | month = | year = | doi = 10.9738/INTSURG-D-14-00066.1 | PMID = 25216411 }} | |||
</ref> | |||
==Gross== | ==Gross== | ||
Revision as of 18:17, 25 April 2016
| 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.
DDx:
- Colonic cast - membranous appearance.
- Arises in colonic ischemia.[2]
Gross
- Soft amorphous material.
- +/-Friable.
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
Anucleate striated muscle - intermed. mag.
Anucleate striated muscle - high mag.
Anucleate striated muscle - high mag.
Anucleate striated muscle - extremely high mag.
TA and plant material - intermed. mag.
TA and plant material - high mag.
Plant material - very high mag.
Sign out
- Often ignored if colorectal mucosa is present.
TRANSVERSE COLON, BIOPSY: - FECAL MATERIAL. - NO DEFINITE COLONIC MUCOSA IDENTIFIED.
Alternate
ASCENDING COLON ("POLYP"), REMOVAL:
- CONSISTENT WITH PARTIALLY DIGESTED FOOD.
- NO DEFINITE COLONIC MUCOSA IDENTIFIED.
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. - NO DEFINITE RECTAL MUCOSA IDENTIFIED.
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.
- ↑ 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.