Fukushima J. Med. Sci.,
Vol. 51, No. 2, 2005

[Case Report]

HEPATIC ADENOMATOUS HYPERPLASIA WITH HYPERATTENUATION
ON CT DURING ARTERIAL PORTOGRAPHY :
A CASE REPORT

SHUZO SATO, TSUYOSHI RAI, HIROMASA OHIRA,
KAZUMICHI ABE, HIRONOBU SAITO, ATSUSHI TAKAHASHI,
NATSUMI SAKAMOTO, NAMIKO HOSHI, EIJI SUZUKI
and YUKIO SATO

Department of Internal Medicine II, Fukushima Medical University School of Medicine,
Fukushima, 960-1295, Japan

(Received September 7, 2005, accepted October 17, 2005)

Abstract: We report a 72-year-old man who was admitted to our department with multiple nodules of hepatocellular carcinoma (HCC) in a cirrhotic liver because of HCV infection. Unlike most of the nodules, one in segment 2 (S2) showed hypoattenuation on computed tomography (CT) during hepatic arteriography (CTA), and hyperattenuation on CT during arterial portography (CTAP). Fine needle aspiration biopsy of the nodule established the diagnosis of hepatic adenomatous hyperplasia.
      Why the S2 nodule showed hyperattenuation on CTAP is not clear. Two possibilities are considered: i) greater portal blood flow into the nodule than into the surrounding cirrhotic parenchyma, ii) existence of a period during the course of hepatocarcinogenesis when the portal blood flow into the nodule is higher in density on CTAP.

Key words: CTAP, CTA, adenomatous hyperplasia, HCC

佐藤秀三，雷　　毅，大平弘正，阿部和道，斎藤広信，高橋敦史，坂本夏美，星奈美子，鈴木英二，佐藤由紀夫

Correspondence to: Shuzo Sato, Department of Internal Medicine II, Fukushima Medical University School of Medicine, Fukushima City 960-1295, Japan.
E-mail: shuzo@fmu.ac.jp