Journal Information
Vol. 83. Issue 1.
Pages 62-63 (January - March 2018)
Vol. 83. Issue 1.
Pages 62-63 (January - March 2018)
Clinical image in Gastroenterology
Open Access
Serrated polyposis syndrome
Síndrome de poliposis serrada
N. Gonzáleza,
Corresponding author

Corresponding author. Departamento de Gastroenterología, Hospital de Clínicas, Av. Italia 2870-Piso 4, Montevideo 11600, Uruguay. Fax: +598 2 4808472.
, M. Caballeroa, C. Cannesab
a Department of Gastroenterology, Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
b Department of Surgery, Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
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A 55-year-old man had unremarkable personal and family histories. Due to a positive fecal occult blood test, he underwent a video colonoscopy that identified multiple (more than 40) flat, elevated polyps (Paris classification 0-IIa) from 10 to 50mm in diameter, and predominating in the right colon (figs. 1 and 2). Magnification chromoendoscopy with acetic acid at 3% was performed (figs. 3 and 4), providing a better definition of the polyps. The anatomopathologic study of one of them reported serrated adenoma with no cytologic dysplasia (fig. 5).

Figure 1.

Endoscopic aspect of the serrated polyps. Flat polyp located in the appendicular orifice.

Figure 2.

Serrated polyp located in the ascending colon. Vascular pattern loss is a characteristic unique sign of the presence of a serrated polyp.

Figure 3.

Chromoendoscopy with the application of acetic acid facilitates the characterization of the lesion and the delineation of its boundaries.

Figure 4.

High-resolution white light image and its magnification after performing chromoendoscopy with acetic acid. A glandular pattern characteristic of the II-O open serrated adenomas described by Kimura et al. is shown.

Figure 5.

Serrated sessile adenoma with no dysplasia (hematoxylin/eosin). The basal luminal dilations (arrow) are characteristic of the glands in the shape of an “anchor”, “J”, or “boot” are shown. This architectural characteristic is objective and easy to identify and differentiates hyperplastic polyps from the microvesicular type.


In accordance with the WHO definition, serrated polyposis syndrome (SPS) was diagnosed due to the presence of more than 20 serrated polyps of any size distributed throughout the colon.

Given the multiplicity of the large lesions that were predominant in the right colon and the topography of one of them at the level of the appendicular orifice, conditioning its endoscopic resectability, the joint decision among surgeons was made to perform a right hemicolectomy, as well as resection by mucosectomy of the polyps described in detail in the left colon.

Ethical responsibilitiesProtection of persons and animals

The authors declare that no experiments were performed on humans or animals for this study.

Data confidentiality

The authors declare that they have followed the protocols of their work center in relation to the publication of patient data.

Right to privacy and informed consent

The authors declare that no patient data appear in this article.

Financial disclosure

No financial support was received in relation to this article.

Conflict of interest

The authors declare that there is no conflict of interest.

Please cite this article as: González N, Caballero M, Cannesa C. Síndrome de poliposis serrada. Revista de Gastroenterología de México. 2018;83:62–63.

Copyright © 2017. Asociación Mexicana de Gastroenterología
Revista de Gastroenterología de México
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