Background: Individual distinguishing evidence may be an imperative field of measurable investigation which demonstrates higher correct expectation rates. This process of recognizable Evidence is facilitated by the assurance of sex and age. In circumstances where there are fragmented and mangled skeletal remains, sex assurance is moderately troublesome, and it becomes important to set up the precision of cadaver bones. Therefore, this study aims to evaluate sexual dimorphism and age determination by measuring foramen magnum (FM) dimensions in the Iranian population using digital computed tomography scan. Methods: The study sample consisted of a modern adult Iranian population of 120 males and 109 females (age range: 15-50 years). Length, width, and area of FM, also FM index were measured on base skull computed tomography scan. Result: All of the parameters of FM (length, width, area, and FM index), were larger in men than women. The accuracy of sex determination was up to 50.2. The highest accuracy for sex determination was FM width (67.9). This study also helps craniofacial surgeon for exact reference value of FM, which are authorize neurosurgeons' accessibility to the brain stem approach and FM region with minimum retraction. Conclusions: It can be concluded from the result, that morphometric analyze of FM is useful for sex determination but cannot be suitable for age determination.

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Correspondence to Dr Milad Rashidbeygi, miladrashidbeygi@yahoo.com DESCRIPTIONA 62-year-old woman with ischaemic heart disease reported having dyspnoea, chest pain in the left hemithorax, epigastric pain and nausea for 4 weeks. The patient's blood pressure was 150/90 mm Hg and ejection-fraction on echocardiography was 30-35%. An electrocardiogram showed a regular rhythm, with a widened QRS complex in all leads. There were notched R waves in V5, V6, aVL, II, III and aVF (figure 1). The small initial R waves in V1 and V2 were followed by deep S waves and wide S waves in left precordial leads (V5 and V6). The electrocardiogram showed characteristics of LBBB and RBBB simultaneously and a wide QRS complex; thus, we suspected an intraventricular conduction defect (IVCD). The ECG appearance of the IVCD was difficult to characterise, because IVCD is often the end result of a number of different pathophysiological processes rather than a discrete defect in the conduction system (as usually occurs with RBBB or LBBB).