TO DETERMINE THE VALIDITY OF HIGH RESOLUTION B-SCAN AND POWER DOPPLER ULTRASOUND IN DETECTION OF SCROTAL MASSES
Keywords:
Scrotum, testis, Ultrasonography, Color DopplerAbstract
Objectives: To determine the accuracy of high resolution grey scale(B-Scan) and Doppler ultrasound in detection of
scrotal masses.
Material and Methods: This is descriptive cross-sectional study, which was conducted at the Radiology Department
of Hayatabad Medical Complex, Peshawar over a period of twelve months i.e. from October 2009 to October 2010.
Patients referred to Radiology Department with scrotal swelling (painless or painful) were scanned with 7.5 to 11 MHz
linear transducer on NEMIO 20 scanner in supine position and erect posture when needed. Gray scale ultrasound
was first conducted to determine the size, location and echogenicity of the lesion. Doppler ultrasound was done to
assess and document the blood flow, spectrum, and velocity of flow and indices in the testes, epididymis, as well as
in the lesion. Accuracy of Doppler scan was determined against histopathology of the respected specimen in case of
tumors and against surgical findings in the benign lesions. Sample size was 112, using 100% sensitivity, 90%
specificity, 86% prevalence, 95%confedence level and 6% margin of error. Sample technique was non-probability
convenience sampling.
Results: In this study, 112 male patients with scrotal swelling / mass (both painful and painless) had ultrasound
examination. Benign masses were found in 89(79.46%) of the patients, while 23(20.54%) had a malignant testicular
tumor. The study included age ranges from 1 up to 59 years. Average age was 29.48 years+ 11.36SD. Most of the
masses were found unilateral 54.5% on right side. On left side it was 41.1% while 4.5% were found on both sides. Age
wise distribution of biopsy results shows that majority of the malignant masses (39.1%) were found in less than 29
years of age while 3.4% patients who were above 49 years of age had benign masses.
Conclusion: Gray scale ultrasound in combination with Doppler ultra sound is a good imaging technique in patients
presenting with scrotal masses. Benign masses are more accurately diagnosed than tumors that require
histopathology for exact tissue characterization.
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