title: Schwannoma with an uncommon anal location.
abstract: Schwannomas are slow-growing mesenchymal neoplasms that arise from Schwann cells with low malignant potential. These uncommon neoplasms are nerve sheath tumors that arise at almost any anatomical site. The majority of schwannomas are benign, and few are malignant. The current study presents the rare case of an anal schwannoma that was successfully treated by surgery; there are few such cases previously reported in the literature. The patient was admitted to hospital following the identification of a mass incidentally. The tumor was so large that it compressed the tissue around it, although no symptoms were caused. The pre-operative clinical diagnosis was inconclusive in this case, and a final diagnosis was established based on radiographic and histopathological examination. The current study aimed to provide a possible differential diagnosis for such anally-located masses.
authors.affiliation: Department of General Surgery, The Third People's Hospital of Dalian, Dalian, Liaoning 116000, P.R. China.
authors.forename: Jiyong
authors.initials: J
authors.lastname: Pan
authors.affiliation: Department of General Surgery, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116000, P.R. China.
authors.forename: Huirong
authors.initials: H
authors.lastname: Jing
authors.affiliation: Department of General Surgery, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116000, P.R. China.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Tian
authors.affiliation: Department of General Surgery, The Third People's Hospital of Dalian, Dalian, Liaoning 116000, P.R. China.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Fan
keywords: anal; benign; case study; schwannoma