Nihon Shokakibyo Gakkai zasshi = The Japanese journal of gastro-enterology · 2013
[A case of combined syndrome of juvenile polyposis and hereditary hemorrhagic telangiectasia associated with SMAD4 mutation].
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Sumitomo Yasuhiko, Yamashita Yukimasa, Itai Ryosuke, Ono Hiroshi, Yamada Satoshi, Matsumoto Yoshihide, Kimura Yoshito, Ikeda Eiji, Takada Mariko, Mikami Sakae
Аннотация
A 47-year-old man was found to have abnormal findings on chest radiography. Chest computed tomography (CT) and magnetic resonance imaging (MRI) showed that he had a pulmonary arteriovenous malformation. He had experienced epistaxis when he was a junior high school student, and since then, the symptom had frequently recurred. Further, he had telangiectasia on the lips. Thus, he was given a diagnosis of hereditary hemorrhagic telangiectasia (HHT). Endoscopy revealed gastric telangiectasia, and in addition, his colon had many juvenile polyps. When he was 49 years of age, he underwent genetic analysis for HHT. A diagnosis of juvenile polyposis-HHT combined syndrome (JP-HHT) was made since a heterozygous germline 4-base deletion in exon 9 of SMAD4 was detected. To the best of our knowledge, this is the first case of JP-HHT associated with SMAD4 mutation in Japan.