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Abstract：
Introduction: Renal haemangioma is a benign tumour, and due to its characteristics, it must be distinguished from malignant diseases. We present a clinical case of primary renal angiosarcoma initially mistaken for haemangioma due to their similarity. Case report: A 58-year-old man was admitted to the hospital with suspicion of pulmonary embolism. The patient complained of pain on the left side. An ultrasound and CT scan of the abdomen showed a tumour mass ~20.5 × 17.2 × 15.4 cm in size in the projection of the left kidney. On CT images, there were data for clear cell renal clear cell carcinoma (ccRCC). A left nephrectomy was performed. However, histological examination revealed renal haemangioma. Three months later, the patient presented to the hospital with abdominal and lumbar pain. A CT scan showed multiple small hypoechoic foci up to 2 cm in size in the liver, lungs, and intra-abdominally, with the most data for carcinosis. Histological re-verification of the left kidney showed a renal vascular tumour with pronounced signs of infarction and necrosis with the majority of the evidence supporting angiosarcoma. Despite treatment, the patient\'s outcome was fatal. Conclusions: Based on the clinical presentation, radiological images and histological examination data, the tumour was initially misdiagnosed as kidney haemangioma. Due to the rarity of this tumour, there are no established treatment protocols or clinical guidelines for managing primary kidney angiosarcoma.
摘要：
简介：肾血管瘤是一种良性肿瘤，由于它的特点，它必须与恶性疾病区分开来。我们介绍了一例原发性肾血管肉瘤的临床病例，由于它们的相似性，最初被误认为是血管瘤。病例报告：一名58岁的男子因怀疑肺栓塞而入院。患者抱怨左侧疼痛。腹部的超声和CT扫描显示，在左肾的投影中，肿瘤肿块的大小约为20.5×17.2×15.4cm。在CT图像上,有透明细胞肾透明细胞癌（ccRCC）的数据。进行左肾切除术。然而,组织学检查显示肾血管瘤。三个月后,患者出现腹部和腰部疼痛。CT扫描显示肝脏中有多个小的低回声病灶，大小达2厘米，肺,腹内，癌症的数据最多。左肾的组织学重新验证显示肾血管肿瘤具有明显的梗塞和坏死迹象，大多数证据支持血管肉瘤。尽管治疗,病人的结局是致命的。结论:根据临床表现,放射学图像和组织学检查数据，该肿瘤最初被误诊为肾血管瘤。由于这种肿瘤的罕见，对于原发性肾血管肉瘤的治疗,目前尚无既定的治疗方案或临床指南.
