Imaging Pearls ❯ Kidney ❯ Renal Bleed
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- Causes of Spontaneous Bleeds: Kidney
- Clear cell renal cell carcinoma
- AML
- Oncocytoma
- TCC - “RCC is the most common malignant renal tumor, with clear cell carcinoma being the most common subtype. Also, RCC is the most common malignant renal neoplasm associated with intratumoral hemorrhage or perirenal hematoma. In addition, hematuria may be observed in cases where the tumor extends into the renal pelvis. The tumor subtype is not a good predictor of hemorrhage, as both clear cell RCC and papillary RCC, the most common subtypes, usually contain hemorrhagic areas. Also, unlike angiomyolipoma (AML), tumor size is not a reliable predictor for bleeding in RCCs. Rarely, an arterio-venous fistula may develop within larger tumors, which may increase the risk of spontaneous bleeding. Tumor thrombus in renal veins may also predispose the tumor to bleed due to increased intratumoral pressure.”
Imaging findings of spontaneous intraabdominal hemorrhage: neoplastic and non‐neoplastic causes
Sevtap Arslan et al.
Abdominal Radiology (2022) 47:1473–1502