Postembolization Intratumoral Chronic Bleeding, without the Classic CT Feature of Active Extravasation, in Tuberous Sclerosis Complex-Related Renal Angiomyolipoma: Two Case Reports

Case Reports in Nephrology and Dialysis
Xixi ZhangHitomi Kato

Abstract

Two patients with tuberous sclerosis complex each had multiple bilateral renal angiomyolipomas. After undergoing embolization for a ruptured angiomyolipoma, patient 1 experienced long-lasting abdominal fullness; contrast-enhanced computed tomography (CECT) revealed a large chronic hematoma without contrast extravasation. Patient 2 underwent embolization for the largest right renal angiomyolipoma which contained a chronic hematoma. 2 weeks later, the symptom of abdominal fullness presented, and CECT revealed that the preexisting hematoma had enlarged without contrast extravasation. In both cases, a second embolization of the angiomyolipomas resulted in shrinking of the intratumoral hematomas and alleviation of the associated symptoms. Therefore, chronic postembolization intratumoral bleeding from renal angiomyolipoma may present as a persistently large or growing hematoma with an associated symptom of abdominal fullness but without the typical CECT feature of active extravasation.

References

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