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  • Title: A colorectal cancer missed by colon capsule endoscopy: a case report.
    Author: MacLeod C, Oliphant R, Docherty JG, Watson AJM.
    Journal: BMC Gastroenterol; 2022 May 21; 22(1):258. PubMed ID: 35597907.
    Abstract:
    BACKGROUND: Colon capsule endoscopy (CCE) is a non-invasive alternative to colonoscopy. The reported sensitivity and specificity of CCE for the detection of clinically significant colonic neoplasia is high. To date, there have been no reported cases of colorectal cancer (CRC) missed by CCE which were located in segments adequately visualised by the capsule. CASE PRESENTATION: We present the case of a 71-year-old female, who underwent CCE for new lower gastrointestinal symptoms. The CCE reported 17 polyps (largest size 10 mm) and angiodysplasia. A 40 mm caecal pole tumour, not detected by the CCE, was identified at follow up colonoscopy. Surgical resection was performed, and the pathology sample was reported as moderately differentiated adenocarcinoma, pT2 pN0 (0/19) M0, with no evidence of EMVI. The patient made an uneventful recovery. The caecal pole tumour was not definitively identified on retrospective review of the CCE images. CONCLUSION: To date, this is the first published case of a CRC missed entirely by CCE. Further research is required to allow calculation of the post CCE interval CRC rate to allow comparison with colonoscopy and CT colonogram.
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