Kobayashi Yuka, Yamada Atsuo, Watabe Hirotsugu, Takahashi Ryota, Suzuki Hirobumi, Hirata Yoshihiro, Yamaji Yutaka, Yoshida Haruhiko, Koike Kazuhiko
Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
J Clin Ultrasound. 2014 Nov-Dec;42(9):554-6. doi: 10.1002/jcu.22147. Epub 2014 Mar 19.
To avoid retention of the capsule used in capsule endoscopy (CE), the patency capsule (PC), a self-disintegrating sham capsule, is administered prior to CE in patients suspected of small intestinal stenosis. If the PC is excreted intact within 30 hours of ingestion, the patient can undergo CE without retention. However, if the PC is not excreted within 30 hours, its location must be confirmed as in either the small intestine or the colon because of the potential for small intestinal stenosis in the former case. It is often difficult to confirm the location of the PC by abdominal radiograph. We report the case of one patient who did not excrete the PC within 30 hours and for whom it was difficult to distinguish whether the PC was in the small intestine or the colon on abdominal series. Abdominal sonography revealed the PC in the colon and subsequent CE was performed without complication.
为避免胶囊内镜检查（CE）中使用的胶囊滞留，对于疑似小肠狭窄的患者，在进行CE之前先给予通畅胶囊（PC），这是一种可自行崩解的假胶囊。如果PC在摄入后30小时内完整排出，患者可进行CE且不会发生滞留。然而，如果PC在30小时内未排出，则必须确认其位置是在小肠还是结肠，因为在前一种情况下存在小肠狭窄的可能性。通过腹部X光片通常很难确认PC的位置。我们报告了一例患者，该患者在30小时内未排出PC，并且在腹部系列检查中难以区分PC是在小肠还是结肠。腹部超声检查显示PC在结肠内，随后进行CE且未出现并发症。
