8833 ISSN 2286-4822 www.euacademic.org EUROPEAN ACADEMIC RESEARCH Vol. III, Issue 8/ November 2015 Impact Factor: 3.4546 (UIF) DRJI Value: 5.9 (B+) Detection of Ki67 and AgNORs among Esophageal Tumors ABU ELGASIM ABASS AWAD ELKAREEM 1 Assistant professor in Histopathology and Cytology College of Medical Laboratory Science Sudan University of Science and Technology, Sudan LEENA AHAMED MOHAMMED ALAMIN B.Sc student, Histopathology and Cytology College of Medical Laboratory Science Sudan University of Science and Technology, Sudan SAJA SAIF ALDIN SALEH MOHAMED B.Sc student, Histopathology and Cytology College of Medical Laboratory Science Sudan University of Science and Technology, Sudan SHYMA ALZUBAIR ABD ALMAGEED ALZUBAIR B.Sc student, Histopathology and Cytology College of Medical Laboratory Science Sudan University of Science and Technology, Sudan Abstract: This study aimed to detect Ki67 expression and its index, and mean Nucleolar Organizer Regions (AgNORs) count in esophageal tumors. Forty paraffin embedded blocks (FFPB) previously diagnosed as esophageal tumors were selected for this study. The patient sex showed that 19 (47.5%) were male and 21 (52.5%) were female. Their ages ranged between 14-89 years with mean age 55.9 years. Samples include 21(52.5%) malignant tumors, and 19 (47.5%) benign tumors. Tumor grade among malignant samples revealed 10 (47.6%) well differentiated tumors, 10 (47.6%) moderately differentiated tumors, and one (4.8%) poorly differentiated tumors. Tissue 1 Corresponding author: gassomy2@gmail.com