Ultrasonographycally Measured Size of the Uterus in Pubertal, Reproductive and Menopausal Women – Correlating with Age, BMI and Parity

Abstract

Uterine size varies with age, parity, hormonal status, and body composition, making accurate population-specific reference values essential for interpreting pelvic ultrasonography. Despite widespread ultrasound use in Bangladesh, normative uterine dimensions across menopausal status and BMI categories remain underreported. A cross-sectional, descriptive study was conducted in the Department of Radiology & Imaging of Community Based Medical College, Bangladesh (CBMC,B) Hospital, Mymensingh, Bangladesh, from October 2024 to September 2025, to determine the size of the normal uterus in pubertal, reproductive and menopausal Bangladeshi women by ultrasonography and correlations with their age, body mass index (BMI) and parity.  We selected a total of 100 women aged between 11 and 90 years for this study through purposive sampling, who were attending the hospital for routine gynaecological visit. The length, width, and height of the uterus were measured using trans-abdominal ultrasonography. Demographic and clinical data, including BMI and parity were collected through structured questionnaires. We observed that the dimensions of the uterus increased steadily across reproductive age, peaking at 41–50 years (length 8.2±1.5 cm). Postmenopausal groups showed progressive involution, most evident after 60 years. Higher parity was associated with larger uterine dimensions, with maximal size in women with six or more births. BMI demonstrated a modest influence, with overweight and obese women showing larger mean measurements than underweight participants. Nulliparous and low-parity women exhibited smaller dimensions than multiparous groups. These population specific normative values enhance diagnostic precision and support more accurate interpretation of pelvic ultrasonography in clinical practice.  

CBMJ 2026 July: Vol. 15 No. 02 P:192-197