Chen Song, Zhao Jiaqi, Xin Jun, Yang Xiaohuan
Department of Ultrasound, Shanghai Fourth People's Hospital Affiliated to Tongji University, Shanghai, China.
J Clin Imaging Sci. 2024 Sep 30;14:37. doi: 10.25259/JCIS_93_2024. eCollection 2024.
We present a case involving a 71-year-old male with tubulocystic renal cell carcinoma (TRCC), which is a rare entity of renal neoplasm. The patient was admitted for a cystic nodule on the middle pole of the right kidney by urological ultrasound during physical examination. The nodule presented with hyperechoic on conventional ultrasonic and the enhancing intensity of thicken cystic wall at the peak phase in contrast-enhanced ultrasound was similar to that of the renal parenchyma. Findings from computed tomography exhibited heterogeneously contrast enhancing tumor, and magnetic resonance imaging demonstrated hypointense on T1-weighted images (WI) and hyperintense on T2WI. Histologically, the spongy surface was composed of the typical tubular and multiloculated cystic components lined by a single layer of epithelial cells. The final pathological diagnosis was TRCC. The uneventful laparoscopic right radical nephrectomy was conducted. The patient was followed up for 12 months after discharge and no signs of local or distant metastasis were found. In conclusion, TRCC should be accurately diagnosed on the basis of comprehensive radiological and histological findings to ensure a timely surgery and better prognosis.
我们报告一例71岁男性患有肾小管囊性肾细胞癌（TRCC）的病例，TRCC是一种罕见的肾肿瘤实体。患者在体检时经泌尿外科超声检查发现右肾中极有一个囊性结节而入院。该结节在传统超声上表现为高回声，在超声造影的峰值期增厚的囊壁增强强度与肾实质相似。计算机断层扫描结果显示肿瘤呈不均匀强化，磁共振成像显示在T1加权图像（WI）上呈低信号，在T2WI上呈高信号。组织学上，海绵状表面由典型的管状和多房囊性成分组成，内衬单层上皮细胞。最终病理诊断为TRCC。顺利进行了腹腔镜右肾根治性切除术。患者出院后随访12个月，未发现局部或远处转移迹象。总之，应根据综合的影像学和组织学检查结果准确诊断TRCC，以确保及时手术并获得更好的预后。
