279.Hemorrhagic renal cyst（1）（出血性肾囊肿）

每天朗读一段医学影像学英语文章

HISTORY：54-year-old man presents with abdominal pain.

病史：54岁男性，腹痛。

FIGURE 4-7A Noncontrast CT of the abdomen demonstrates a small, well-defined lesion in the lateral portion of the right kidney with increased attenuation (+59 Hounsfield units [HU]) compared to the adjacent renal tissue.

图4-7A ：平扫腹部CT可见右肾边缘一小病灶，边界清晰，较周边肾组织密度增高（59HU）

FIGURE 4-7B On corresponding contrast-enhanced CT image, the lesion demonstrates lack of contrast enhancement (attenuation increase compared to the noncontrast scan = +1 HU).

图4-7B:同位置的增强CT可见该病灶无强化（较平扫HU增强1HU）

DIFFERENTIAL DIAGNOSIS

·Hemorrhagic renal cell carcinoma (RCC): This diagnosis is unlikely because the entire lesion is of uniform increased attenuation on the noncontrast study.

·Hemorrhagic angiomyolipoma: This diagnosis is unlikely due to the absence of macroscopic fat on the noncontrast CT.

·Hemorrhagic renal cyst: This is the most likely diagnosis due to the small size, uniform appearance, and lack of enhancement of this renal lesion.

鉴别诊断：

1.肾癌出血：该诊断可能性较小。病灶在平扫上表现为均一无强化；

2.血管平滑肌脂肪瘤出血：该诊断可能性较小。平扫未见病灶内含脂肪；

3.肾囊肿出血：该诊断可能性最高。该病灶体积小，密度均一，为未见强化。

DIAGNOSIS

Hemorrhagic renal cyst

肾囊肿出血。

Notes:

1. hemorrhagic ['hemərædʒaɪk] adj. 出血性; 出血的

2. angiomyolipoma [ænɡɪrma'ɪɒlɪpəmə] 血管肌脂瘤

3. macroscopic [ˌmækrə'skɒpɪk] adj. 宏观的; 肉眼可见的

来源：每天朗读一段医学影像学英语文章

圈主

深圳市人民医院放射科副主任医师杨敏洁

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