Kamigaito Takayuki, Nishizawa Shuji, Nakayama Tsuyoshi, Okaneya Toshikazu, Suzuki Kazumi, Morita Tatsuo
The Department of Urology, Nagano Municipal Hospital.
Hinyokika Kiyo. 2008 Feb;54(2):107-9.
We evaluated the efficacy of magnetic resonance imaging (MRI) as the preoperative study in the management of the nonpalpable testis. From 1997 to 2005, a total of 41 MRI was performed for the patients with nonpalpable testis and 42 testes were evaluated. The MRI showed 19 testes from 18 patients in the inguinal region. Eighteen testes were found in the inguinal region and one was intraabdominal during groin exploration. Six testes were pointed out to be intra-abdominal by MRI. Five testes were identified in the abdomen and one was disclosed to be vanishing testis. Seventeen testes could not be detected by MRI and they underwent laparoscopic or groin exploration. Four abdominal testes were identified. Thirteen patients had a diagnosis of vanishing testis. The sensitivity and the specificity of our MRI studies in predicting the presence of nonpalpable testis were 85.7% and 92.9%, respectively. Enlarged lymph node could be misdiagnosed as abdominal testis. Inguinal undescended testes can be diagnosed accurately with MRI. MRI is informative regarding the testis location and useful for limiting the area of surgical exploration.
我们评估了磁共振成像（MRI）作为术前检查手段在不可触及睾丸处理中的有效性。1997年至2005年，共对41例不可触及睾丸患者进行了MRI检查，评估了42个睾丸。MRI显示18例患者的19个睾丸位于腹股沟区。腹股沟探查时发现18个睾丸位于腹股沟区，1个位于腹腔内。MRI提示6个睾丸位于腹腔内。5个睾丸在腹部被发现，1个被诊断为睾丸缺如。17个睾丸未被MRI检测到，这些患者接受了腹腔镜或腹股沟探查。发现4个腹腔内睾丸。13例患者被诊断为睾丸缺如。我们的MRI检查在预测不可触及睾丸存在方面的敏感性和特异性分别为85.7%和92.9%。肿大的淋巴结可能被误诊为腹腔内睾丸。腹股沟隐睾可以通过MRI准确诊断。MRI对于睾丸位置有提示作用，有助于限定手术探查范围。
