Melanocytic nevus of the anal canal and granular cell tumor of the cecum: a case report and literature review of 2 coincidentally co-occurring neurocristopathies
10.3393/ac.2022.00444.0063
- Author:
Victoria SANDOVAL
1
;
Jorge LARA-ENDARA
;
Javier RODRÍGUEZ-SUÁREZ
;
Williams Arias GARZÓN
;
Ligia REDROBÁN
;
Nelson MONTALVO
Author Information
1. Department of Teaching and Research, Faculty of Medical Sciences of Health and Life, School of Medicine, International University of Ecuador, Quito, Ecuador
- Publication Type:Case Report
- From:Annals of Coloproctology
2024;40(Suppl 1):S23-S26
- CountryRepublic of Korea
- Language:English
-
Abstract:
Granular cell tumors are predominantly benign soft tissue tumors originating from Schwann cells, whereas melanocytic nevi are benign proliferations of melanocytes. We present the case of a patient with the presence of both entities located in the cecum and anal canal, respectively, constituting an extremely rare coincidental finding. A 43-year-old woman was evaluated by colonoscopy for iron-deficiency microcytic anemia that had lasted for 1 year. Colonoscopy demonstrated a macular lesion of 0.3 cm with a melanocytic appearance in the anal canal; at the cecum level, a subepithelial, yellowish, and partially mobile firm nodular lesion measuring 1.3 cm was observed. A histopathological study showed a melanocytic nevus in the anal canal and a granular cell tumor in the cecum. This is the first reported case of a patient with the extremely rare coincidental-incidental finding of these 2 entities at the same time.
