その他(Miscellaneous)シリーズ11 RESIDENT COURSE 解答 【症例 MR 53】

S状結腸癌.Sigmoid cancer









図4と図5で盲腸(C)と下行結腸(D)共に拡張しているので下行結腸の肛門側の閉塞を示唆する.図6の1から追跡すると図17の24で閉塞するので図14〜図16の△が原因病変で,強い造影効果を受けS状結腸癌であろう.肛門側はS1から直腸(R)へと展開する.図4で盲腸(C)は最大径12cmあり,図1〜図5の↑は壁内気腫を示しており,何らかの減圧法を考慮すべきである(下記文献).大腸ファイバー検査でS状結腸癌と診断され,経肛門的にイレウスチューブを挿入し(図A)減圧に成功した.










文献考察:穿孔の危険性の高い大腸閉塞.1.壁内気腫(1),2.盲腸の最大径>12cm(1),3.小腸拡張がない(2).

1)Abdom Imaging. 2003 Mar-Apr;28(2):267-75. Helical CT of large bowel obstruction. Taourel P, Kessler N, Lesnik A, Pujol J, Morcos L, Bruel JM.
2)Ann Surg Oncol. 2002 Jul;9(6):574-9. Placement of self-expanding metal stents for acute malignant large-bowel obstruction: a collective review. Dauphine CE, Tan P, Beart RW Jr, Vukasin P, Cohen H, Corman ML.

BACKGROUND: The purpose of this study was to review our experience with self-expanding metal stents as the initial interventional approach in the management of acute malignant large-bowel obstruction. METHODS: Twenty-six patients who underwent placement of colonic stents at our institution between June 1994 and June 2000 were identified and reviewed. RESULTS: In 14 patients, the stents were placed for palliation, whereas in 12, they were placed as a bridge to surgery. In 22 patients (85%), stent placement was successful on the first occasion. In the remaining four individuals, one was successfully stented at the second occasion, and three required emergency surgery. Nine of the 12 patients (75%) in the bridge-to-surgery group underwent elective colon resection. In the palliative group, four patients (29%) had reobstruction of the stents, and in one (9%), the stent migrated. In the remaining nine patients (64%), the stent was patent until the patient died or until the time of last follow-up (median, 156 days). CONCLUSIONS: In our experience with 26 patients who developed a complete bowel obstruction as a consequence of a malignant tumor, placement of colonic stents to achieve immediate nonoperative decompression proved to be both safe and effective. Subsequent elective resection was accomplished in the majority of resectable cases. PMID: 12095974
  【参照症例】   1. 下腹部痛シリーズ(Lower Abdominal Pain) 12 【症例 LR 59】

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