PP 55. Three Cases of Hepatic Angiomyolipoma

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T. Mizumoto, J. Watanabe, T. Takebayashi, K. Tamura, H. Sato, E. Ito, S. Kageyama, M. Hatano, H. Inoue, T. Izumi, A Takai, T. Tohyama, F. Kushihata, Y. Takada

19:10 - 19:16h at Lanchid Room

Categories: Poster Session , Surgical Oncology

Session: Poster (P4) - Surgical Oncology

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Background
Angiomyolipomas(AML) is a rare benign tumor derived from perivascular epithelioid cells that develops frequently in the kidney and rarely in the liver. However, patients with hepatic AML increase in number along with improvement of imaging technology. Hepatic AML is benign disease basically, but a malignant report appeared recently, and it is difficult to make differential diagnosis
between well differentiated hepatocellulercarcinoma including adipose composition and hepatic AML.

Material and Methods
We report three cases of hapatic AML in our unit.

Result
Case 1, a 50 years old male with hepatitis B infection was found to have a hepatic mass with abdominal CT scan. It was diagnosed for hepatocellularcarcinoma, but it was difficult to cure by radio frequency ablation. We performed laparoscopic hepatic S8 resection. Case 2: a 76 years old male with alcoholic cirrhosis developed hepatic tumor 3.2cm with an enhancement tendency. We performed hepatic S6 resection. Case 3: a 71 years old female with NASH had hepatic mass, it was followed-up suspected for hepatic AML for five years. However, the tumor increased in volume. We performed hepatic S8 partial excision.

Conclusion
Hepatic AML was difficult to establish preoperative decisive diagnosis in our caces. There are a few cases of malignant case, and reccurence and metastasis reports after resection. Therefore for hepatic AML, active abscission is necessary, and we recommend periodical close follow-up after resection.