An unusual bowel complication during molecularly-targeted therapy

An unusual bowel complication during molecularly-targeted therapy

Digestive and Liver Disease 47 (2015) e20 Contents lists available at ScienceDirect Digestive and Liver Disease journal homepage: www.elsevier.com/l...

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Digestive and Liver Disease 47 (2015) e20

Contents lists available at ScienceDirect

Digestive and Liver Disease journal homepage: www.elsevier.com/locate/dld

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An unusual bowel complication during molecularly-targeted therapy Kensuke Adachi a,∗ , Shoichi Okamoto b a b

Department of Surgery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan Department of Respiratory Medicine, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan

Fig. 1.

A 66-year-old woman with metastatic lung adenocarcinoma was admitted because of nausea and vomiting which she began experiencing a month after commencing third-line chemotherapy with orally-active, molecularly-targeted gefitinib. During the chemotherapy, only gefitinib was administered to the patient. A computed tomography (CT) with intravenous contrast detected extensive intraluminal gas along the small intestine and a pneumoperitoneum (Fig. 1, arrows), but no bowel obstruction or ischaemia was observed. The intraluminal gas was consistent with linear pneumatosis intestinalis (PI) although a serial CT during the course of her disease denied these features. An assessment based on our findings was sufficient for the diagnosis of pneumoperitoneum due to benign PI.



Corresponding author at: Department of Surgery, Tokyo Metropolitan Tama Medical Center, 2-8-29 Musashidai, Fuchu, Tokyo 183-8524, Japan. Tel.: +81 42 323 5111; fax: +81 42 323 9209. E-mail address: kensuke [email protected] (K. Adachi).

Fig. 2.

The patient was treated conservatively by discontinuing gefitinib, prohibiting oral intake, and administering a course of intravenous prophylactic antibiotics. Although the patient was closely monitored, her condition remained stable and without incident. She resumed oral intake 3 days later and was discharged after ten days. A CT performed before her discharge revealed a complete resolution of the PI and pneumoperitoneum (Fig. 2). Given the time course of resolution and her disease history, gefitinib might have played a major role in the development of the PI and pneumoperitoneum. Awareness of this entity and therapeutic rationale will help steer clinicians towards timely, appropriate management, and avoid unnecessary laparotomies [1]. Reference [1] Guiu S, Ortega-Deballon P, Guiu B. Pneumatosis intestinalis and pneumoperitoneum during treatment by paclitaxel. Surgery 2011;149:297–8.

http://dx.doi.org/10.1016/j.dld.2015.06.017 1590-8658/© 2015 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.