腹部全体痛シリーズ(Generalized Abdominal Pain)1 RESIDENT COURSE 解答 【症例 GR 4】

直腸癌による大腸閉塞.Colon obstruction with rectum cancer



図4と図5で上行結腸(AC)と下行結腸(DC)が共に拡張しているので,図6の1から肛門側へ追跡すると,図11の18で壁肥厚があり(△),図11から図9で腫瘤となり(▲)閉塞している.図12と図13の虚脱した直腸へと連続するので直腸の病変であり,よく造影され癌であろう.図6で盲腸(CE)は最大径12cmを超え,さらに図4〜図11の↑は壁内気腫であり,穿孔寸前の極めて危険な状態と判断すべきである.緊急に大腸ファイバーを施行し,直腸癌を確認後経肛門的イレウスチューブを挿入した.図Aと図Bは4日後のCT,盲腸の拡張は改善し壁内気腫も消失した.TI:回腸末端.









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

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