白浜 正文1, 古賀 貴文1, 石橋 大海2, 内田 哲1
Masafumi SHIRAHAMA1, Takafumi KOGA1, Hiromi ISHIBASHI2, Satoshi UCHIDA1
1Department of Internal Medicine, Saga Prefectural Hospital, 2The First Department of Internal Medicine, Faculty of Medicine, Kyushu University
Ultrasonography, Ulcerative colitis
Transabdominal high-resolution ultrasonography (US) was performed for twelve patients with active
ulcerative colitis. The colon wall was clearly thickened in all patients (4∼10 mm) , and recognizable as a four-
or five-layered structure; beginning luminally, a thin echogenic layer, an echo-poor layer, an echogenic layer,
an echo-poor layer, and an echogenic layer. Thickening of the colon wall derived mainly from widening of the
inner echo-poor layer and the central echogenic layer. The location of the diseased colon was consistent with
the findings of the barium studies. The degree of wall thickening corresponded to the progress of the disease.
US findings also included narrowing of the lumen, straightening of the bowel loops, reduced peristalsis, rigidity
of the wall, and a lack of haustration. In four patients, lymphadenopathy was found near the diseased colon.
Ascitic fluid or abscess formations were not detected. After effective treatment, the wall thickness promptly
decreased (4 mm or less). Although US findings are nonspecific, US is a safe and useful diagnostic method in
the diagnosis and management of ulcerative colitis.