Synonyms
Polypoid variant of solitary rectal ulcer
Definition
The inflammatory cloacogenic polyp is a benign polypoid lesion of the anal transitional zone (ATZ). It is included into the mucosal prolapse syndrome with other conditions, with which it shares some histological and pathogenic features, such as the solitary rectal ulcer, the colitis cystic profunda, the inflammatory myoglandular polyp, and the cap polyp and polyposis.
Cloacogenic polyp is considered as a result of nonspecific regenerative changes of the anorectal mucosa caused by recurrent prolapse, or mucosal injury. It could result from mucosal ischemia and regenerative changes secondary to anal mucosal prolapse, caused by constipation, chronic disorders of defecation, and inappropriate puborectalis muscle contractions. The same type of changes can also be seen in other situations with mucosal prolapse, such as colonic intussusceptions, prolapsed colostomies, prolapsed hemorrhoids, prolapsing polyps in association with...
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References and Further Reading
Du Boulay, C. E., Fairbrother, J., & Isaacson, P. G. (1983). Mucosal prolapse syndrome – A unifying concept for solitary ulcer syndrome and related disorders. Journal of Clinical Pathology, 36, 1264–1268.
Hanson, I. M., & Armstrong, G. R. (1999). Anal intraepithelial neoplasia in an inflammatory cloacogenic polyp. Journal of Clinical Pathology, 52, 393–594.
Lobert, P. F., & Appelman, H. D. (1981). Inflammatory cloacogenic polyp. A unique inflammatory lesion of the anal transitional zone. The American Journal of Surgical Pathology, 5, 761–766.
Saul, S. H. (1987). Inflammatory cloacogenic polyp: Relationship to solitary rectal ulcer syndrome/mucosal prolapse and other bowel disorders. Human Pathology, 18, 1120–1125.
Singh, B., Mortensen, N. J., & Warren, B. F. (2007). Histopathological mimicry in mucosal prolapse. Histopathology, 50, 97–102.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer-Verlag Berlin Heidelberg
About this entry
Cite this entry
Denis, C., Fléjou, JF. (2017). Inflammatory Cloacogenic Polyp. In: Carneiro, F., Chaves, P., Ensari, A. (eds) Pathology of the Gastrointestinal Tract. Encyclopedia of Pathology. Springer, Cham. https://doi.org/10.1007/978-3-319-40560-5_1491
Download citation
DOI: https://doi.org/10.1007/978-3-319-40560-5_1491
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-40559-9
Online ISBN: 978-3-319-40560-5
eBook Packages: MedicineReference Module Medicine