Inguino scrotal swellings are one of the most common surgical cases in outpatient department. Among the scrotal swelling, hydrocele is the most common and easily diagnosable case clinically. Other cases include epididymal cyst, hematocele, pyocele, lymphocele , varicocele[1]. In this study those cases which were misdiagnosed as hydrocele are taken into consideration. These cases showed all features of hydrocele which seemed to be pitfall in diagnosis. Intra operative findings were surprising by which post operative diagnosis changed altogether. Thus these cases were eye opener in diagnosis by history taking ,clinical examination and ultrasonogram.