Sonography of scrotal abnormality among subfertile and fertile males in Abuja, Nigeria

Abstract

Background Male factor infertility in Nigeria accounts for up to 50% of all infertility cases, most of which happen as a result of abnormalities of testicular function and infection. Male factor can be assessed by seminal fluid analysis; however scrotal ultrasound is now increasingly being used to evaluate males with infertility. Objectives The objective of this study is to determine the spectrum of scrotal abnormalities on ultrasound in sub-fertile and fertile men. Patients and method This was a prospective study which spanned for a period of eight months (January–August 2016). A total of 270 patients were included in the study comprising of 180 consecutive males who were being evaluated for sub-fertility and 90 apparently normal fertile adults who underwent a scrotal scan at the radiology department of University of Abuja Teaching Hospital using 7.5 MHz of EMP G70, China scan machine with Doppler facility. All patients were scanned in supine and upright position in both B and Doppler modes and any scrotal abnormalities were recorded. Result The mean age of sub-fertile and fertile subjects studied was 29 ± 11.4 years and 34 ± 16.3 years, respectively. Scrotal abnormalities were commoner in the sub-fertile group compared to the fertile group with a prevalence rate of 45.0% and 32.2%, respectively. Varicocele was the most common finding in both groups with a higher prevalence rate of 50.6% in the sub-fertile group compared to 48.3% in fertile group. This distribution was statistically significant (P = 0.000). Varicocele was observed more on the left. Hydrocele was the second most common finding in both groups. Conclusion The role of scrotal scan in evaluating infertility cannot be overemphasized. In this study, ultrasound scan was used to evaluate 45.0% of sub-fertile subjects with scrotal abnormalities. Ultrasound being non-invasive and readily available should be considered as an important investigation in accessing cases of infertility.