Hemorrhagic angiomyolipoma: demonstration by computed tomography

Area of Science:

• Radiology
• Oncology
• Nephrology

Background:

• Renal angiomyolipomas are benign tumors frequently diagnosed preoperatively using computed tomography (CT).
• Hemorrhage is a common presentation for these hypervascular tumors but often missed on preoperative imaging.
• Accurate preoperative diagnosis is crucial for appropriate patient management.

Observation:

• Two cases of large, solitary renal angiomyolipomas are presented.
• Both cases demonstrated significant hemorrhage within the tumor and surrounding the kidney.
• Computed tomography (CT) was the primary imaging modality used.

Findings:

• Computed tomography (CT) identified large, solitary renal angiomyolipomas.
• CT revealed both intratumoral and perinephric hemorrhage associated with the tumors.
• Preoperative recognition of hemorrhage in renal angiomyolipoma remains challenging despite advanced imaging.

Implications:

• This highlights the need for increased vigilance when interpreting CT scans of renal angiomyolipomas, particularly for signs of hemorrhage.
• Improved preoperative identification of hemorrhage could lead to more timely and appropriate interventions.
• Further research may be warranted to enhance the detection of hemorrhage in renal angiomyolipomas using CT or other modalities.