Meri Yeghiazaryan, Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey, Monterrey, Nuevo León, México
Mario Zambrano-Lara, Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey, Monterrey; Coloncare, Hospital Ángeles Valle Oriente, San Pedro Garza García. Nuevo León, México
David Aguirre-Mar, Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey, Monterrey, Nuevo León, México
Andrea F. Hernández-Trejo, Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey, Monterrey, Nuevo León, México
Éricka I. Pérez-García, Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey, Monterrey, Nuevo León, México
Leiomyomas are benign smooth muscle tumors that are rare in the anorectal region. Diagnosis is challenging due to nonspecific symptoms and uncommon location. They primarily affect middle-aged women and may grow in intraluminal, intramural, or extraluminal patterns. Magnetic resonance imaging and transanal ultrasound are essential to assess tumor extent and its relationship with the anal sphincter. Large tumors may require sphincter reconstruction. Diagnosis is confirmed by histopathology and immunohistochemistry. The treatment is complete surgical resection, with a low recurrence rate. This case highlights the importance of careful evaluation in unusual anorectal tumors.
Keywords: Anal leiomyoma. Anal tumor. Benign tumor. Anal sphincter.