Renal suspicious cell carcinoma is a more common pathological subtype of kidney cancer, accounting for about 4-10% of kidney cancers. The initial diagnosis can be made mainly by imaging examinations such as ultrasound, CT, and MRI, but pathological examination is still required to confirm the diagnosis.
Ultrasound performance: generally hypoechoic with clear borders, but may appear as uneven echogenicity when necrosis and liquefaction are present inside the tumor; the tumor is often large in size and compresses the kidney and surrounding tissues and organs.
CT performance: It generally appears as a hypointense shadow, and a mixed-density shadow when there are foci of necrosis inside the tumor, and there is a significant enhancement effect after enhancement. The diameter of renal suspicious cell carcinoma is often greater than 4 cm, and the surrounding tissues and organs are easily displaced by compression. The boundaries of the tumor are usually clear in the early stage, but in the late stage, it may gradually invade the surrounding tissues and organs with unclear boundaries; the late stage tumor may also show enlarged lymph nodes in the renal hilum and retroperitoneum.
MRI manifestations: MRI has obvious advantages for the staging diagnosis of advanced renal smallpox cell carcinoma, especially when brain metastases, renal vein carcinoma thrombosis, and inferior vena cava carcinoma thrombosis are present. The renal vein cancer thrombus and inferior vena cava cancer thrombus showed moderate signal in T1WI or high signal in T2WI on MRI, while the blood was low signal in the vasculature.