RESUMO
This cross sectional descriptive study was performed on 70 postmortem vermiform appendix (male 34 and female 36) to find out the external diameter of vermiform appendix of Bangladeshi people in different age and sex. The specimens were collected from autopsy laboratory of the Department of Forensic Medicine, Mymensingh Medical College, Mymensingh, Bangladesh from October 2016 to March 2017 by purposive sampling technique. The collected samples were divided into four age groups. They were Group A (upto 20 years), Group B (21 to 40 years), Group C (41 to 60 years) and Group D (above 60 years). Dissection was performed according to standard autopsy techniques. The vermiform appendix was collected and preserved in 10% formol-saline solution. The external diameter of vermiform appendix was measured with the help of digital slide calipers. Three measurements were taken at its base, middle and near the tip (1cm away from the tip) and expressed in mm. The data were analyzed by using student unpaired 't' test and compaired with the findings of other national and international studies and standard text books. It was observed that external diameter of vermiform appendix gradually decreased as age advanced. The mean±SD external diameter of vermiform appendix at base was 6.50±0.82 mm, 6.22±0.60 mm, 6.00±0.51 mm and 5.51±0.57 mm in Group A, B, C & D respectively. The mean±SD external diameter of vermiform appendix at middle was 6.09±0.89 mm, 5.67±0.65 mm, 5.38±0.59 mm and 4.95±0.76 mm in Group A, B, C and D respectively. The mean±SD external diameter of vermiform appendix near the tip (1 cm away from the tip) was 5.73±0.88 mm, 5.21±0.72 mm, 4.81±0.74 mm and 4.34±0.74 mm in Group A, B, C and D respectively. Statistical analysis shows that the mean differences of external diameter of vermiform appendix at its base between Group A&D, B&D were statistically moderately significant at p<0.01 level. Between Group C&D was statistically significant at p<0.05 level and between Group A&B, B&C, A&C were statistically non significant at p = or >0.05 level. Mean differences of external diameter of vermiform appendix at its middle between Group A&D, B&D were statistically moderately significant at p<0.01 level. Between Group A&C was statistically significant at p<0.05 level and between Group A&B, B&C, C&D were statistically non significant at p = or >0.05 level. Mean differences of external diameter of vermiform appendix near its tip (1 cm away from the tip) between Group A&D was statistically highly significant at p<0.001 and mean differences between Group B&D, A&C were statistically moderately significant at p<0.01 level. Between Group A&B was statistically significant at p<0.05 level and between Group B&C, C&D were statistically non significant at p = or >0.05 level. Mean external diameter of vermiform appendix in male was higher than that of female in all age group at its base, middle and near the tip (1cm away from the tip) but mean difference between sexes in the different study groups was statistically non significant at p = or >0.05 level. The present study will help to increase the information pool on the external diameter of vermiform appendix of Bangladeshi people.
