67ACCURACY OF CLINICAL DIAGNOSIS INACUTE APPENDICITISAppendix is commonly encountered surgical entity. In our study of 60 patients from histopathological examination of appendix and other diagnosis during surgery, the clinical diagnostic accuracy overall was 87.8%, in male 91.1 % (31 out of 34) in female 84.6 % (22 out of 26 patients), in the active reproductive age group the negative rate was 17.64%. 15 out of 53 acute appendicitis patients had elevated total count, this accounts for 28.1 %.25 out of 89 acute appendicitis patients had elevated total count, this accounts for 28.3 %.The overall diagnostic accuracy was 87.8%, the diagnostic accuracy in male 91.1.% (31 out of 34), in female 84.6% (22 out of 26) juniorsundresh@yahoo.comResearch432014Acute Appendicitis, clinical diagnosis,Histopathological examination,Emergency abdominal SurgeryN.Junior Sundresh,S.Narendran,C.S.SubramanianReader in Surgery, Department of Surgery, RMMCH, Annamalai University, Chidambaram, Tamilnadu, India,Emeritus Prof. of Surgery, Dr. M.G.R.Medical University, Chennai, Tamilnadu, India,Prof. of Surgery, RMMCH, Annamalai University, Chidambaram, Tamilnadu, India