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Angiomyolipoma with cavoatrial extension.
Yigit Akcali1, Okkes Ibrahim Karahan, Guven Kahriman
1Department of Cardiovascular Surgery, Erciyes University Medical Faculty, Kayseri, Turkey.
European Urology
|July 11, 2006
Summary
A rare case of angiomyolipoma extending into the right atrium was reported. This benign tumor invaded the inferior vena cava and right atrium, highlighting a critical diagnostic consideration.
Area of Science:
- Cardiovascular Surgery
- Oncology
- Pathology
Background:
- Angiomyolipomas are benign tumors typically found in the kidney, composed of mature adipose tissue, smooth muscle, and blood vessels.
- Cavoatrial extension of tumors is a rare but serious condition, often associated with malignant neoplasms.
- This case presents a unique instance of a benign angiomyolipoma exhibiting such extensive local invasion.
Observation:
- A 55-year-old woman presented with a hypodense mass identified via multislice computed tomography.
- The mass extended from the right renal vein through the inferior vena cava into the right atrium.
- Notably, no primary renal mass was initially detected.
Findings:
- Surgical resection of the right atrial mass was performed.
- Pathologic evaluation confirmed the tumor's composition of mature adipose tissue, smooth muscle, and vessels, consistent with angiomyolipoma.
- Histological analysis verified the benign nature of the tumor despite its significant local invasion.
Implications:
- This case underscores the rare but critical possibility of angiomyolipoma invading major vascular structures like the inferior vena cava and right atrium.
- It highlights the importance of considering angiomyolipoma in the differential diagnosis of masses with cavoatrial extension, even in the absence of a clear renal origin.
- Accurate diagnosis and surgical management are crucial for favorable outcomes in such rare presentations of benign tumors.