Surgical Oncology Department;
South Egypt Cancer Institute;
Assiut University;
Egypt;
Radiation Oncology & Nuclear Medicine Department;
South Egypt Cancer Institute;
Assiut University;
Egypt;
Clinical Oncology and Nuclear Medicine Department;
Faculty of Medicine;
Assiut University;
Egypt;
Intersphincteric; Resection; ISR; Cancer; Rectum; Functional; Outcomes; Oncologic; Outcomes;