Department of Oncological and Surgical Sciences, Section of Paediatric Urology, Urology Unit, University Hospital of Padova, Padua, Italy.
J Pediatr Surg. 2012 Aug;47(8):1618-21. doi: 10.1016/j.jpedsurg.2012.06.001.
A 3-year-old boy presented with an asymptomatic intertesticular mass increasing in size. Plasma tumor markers (α-fetoprotein and β-human chorionic gonadotrophin) were negative. The mass had a pattern similar to testicular parenchyma but no discernable blood flow on scrotal Doppler ultrasound. Magnetic resonance imaging scan showed that it reached the posterior urethra after passing through the right corpus cavernosum with a progressive tapering extending into the pelvis. The mass was excised surgically and histologically found to be consistent with a dermoid cyst. Such rare benign lesions should be considered in the differential diagnosis of painless scrotal masses in children. Its anatomy was accurately defined by magnetic resonance imaging and was essential to minimize the risk to adjacent structures.
一位 3 岁男孩因无症状的睪丸间肿块增大而就诊。血浆肿瘤标志物（甲胎蛋白和β-人绒毛膜促性腺激素）为阴性。该肿块的模式类似于睪丸实质，但阴囊多普勒超声检查未发现可识别的血流。磁共振成像扫描显示，它穿过右侧海绵体后到达后尿道，逐渐变细延伸至骨盆。该肿块通过手术切除，组织学检查结果符合皮样囊肿。在儿童无痛性阴囊肿块的鉴别诊断中应考虑到这种罕见的良性病变。磁共振成像准确地定义了其解剖结构，对于降低对邻近结构的风险至关重要。
