Ultrasonography of intrahepatic bile duct adenoma with renal cell carcinoma: correlation with pathology.
Intrahepatic bile duct adenoma (BDA) is a relatively rare benign tumor. Most cases are incidentally discovered during surgery or autopsy. We report here the co-existence of renal cell carcinoma and BDA mimicking metastasis in a 30-year-old female. An isoechoic nodule with a hypoechoic rim sized 10 × 9 mm was observed by ultrasonography in S2 of the liver. On contrast-enhanced ultrasonography (CEUS), the mass was enhanced in the early vascular phase and a defect with a clear border appeared in the post-vascular phase. We present the ultrasonography findings of BDA, including those yielded by CEUS using Sonazoid, along with the gross and microscopic pathological correlation.
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan. manabu62@med.toho-u.ac.jp.
Manabu
M
Watanabe
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan.
Kazue
K
Shiozawa
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan.
Takashi
T
Ikehara
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan.
Miue
M
Ichimori
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan.
Mie
M
Shinohara
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan.
Yoshinori
Y
Kikuchi
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan.
Koji
K
Ishii
Department of Surgical Pathology, Toho University Medical Center, Omori Hospital, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan.
Tetsuo
T
Nemoto
Department of Surgical Pathology, Toho University Medical Center, Omori Hospital, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan.
Kazutoshi
K
Shibuya
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan.
Yasukiyo
Y
Sumino
Bile duct adenoma; Contrast-enhanced ultrasonography; Sonazoid