S Martellotto1,2, A Dohan3, M Pocard4. 1. Digestive Surgery Service, Intercommunal Hospital Center of Créteil, 40 Avenue de Verdun, 94000, Creteil, France. sophie.martellotto@gmail.com. 2. Digestive and Cancer Surgery Service, AP-HP, Lariboisière Hospital, 2 rue Ambroise Paré, 75010, Paris, France. sophie.martellotto@gmail.com. 3. Service de Radiologie, AP-HP, Hôpital Cochin, 27 rue du Faubourg Saint Jacques, 75014, Paris, France. 4. Digestive and Cancer Surgery Service, AP-HP, Lariboisière Hospital, 2 rue Ambroise Paré, 75010, Paris, France. marc.pocard@gmail.com.
Abstract
BACKGROUND: The CT scan has supplanted the abdominal ultrasound for emergency examinations. A comparison of CT scan and ultrasound performance for the diagnosis and management of acute cholecystitis in acute care was proposed. The hypothesis is that the CT scan may be sufficient for the diagnosis of acute cholecystitis, which would allow faster progress to surgery. METHODS: The retrospective study of consecutive patients operated for acute cholecystitis or gallbladder distension with pre-operative imaging within 48 h in one centre. RESULTS: Between 2015 and 2017, a total of 341 cholecystectomies were performed in our centre. The analysis involved 120 patients. Ultrasound had better sensitivity than the CT scan, respectively, 79.4% [70.5-86.6] and 52.3% [42.5-62.1], but less specificity, with 61.5% [31.6-86.1] and 92.3% [64.0-99.8], respectively. However, there was a significant difference in favour of the CT scan for the diagnosis of complicated cholecystitis (p 0.004). The positive likelihood ratio of complicated cholecystitis is better at CT scan (7.8) [2.7-23.1] than in ultrasound (1.0) [0.1-9.7]. CT scan and ultrasound are equivalent for the diagnosis of acute cholecystitis, but CT scan is more efficient for the diagnosis of complicated cases (Youden index J 0.3 vs 0.001). CONCLUSION: It is possible to place the surgical indication of cholecystectomy on the only data of the CT scan. We propose a decision-making algorithm that uses the CT scan to make the diagnosis and decide on emergency treatment for complicated cases or that allows us to propose a delayed surgery for simple cholecystitis.
BACKGROUND: The CT scan has supplanted the abdominal ultrasound for emergency examinations. A comparison of CT scan and ultrasound performance for the diagnosis and management of acute cholecystitis in acute care was proposed. The hypothesis is that the CT scan may be sufficient for the diagnosis of acute cholecystitis, which would allow faster progress to surgery. METHODS: The retrospective study of consecutive patients operated for acute cholecystitis or gallbladder distension with pre-operative imaging within 48 h in one centre. RESULTS: Between 2015 and 2017, a total of 341 cholecystectomies were performed in our centre. The analysis involved 120 patients. Ultrasound had better sensitivity than the CT scan, respectively, 79.4% [70.5-86.6] and 52.3% [42.5-62.1], but less specificity, with 61.5% [31.6-86.1] and 92.3% [64.0-99.8], respectively. However, there was a significant difference in favour of the CT scan for the diagnosis of complicated cholecystitis (p 0.004). The positive likelihood ratio of complicated cholecystitis is better at CT scan (7.8) [2.7-23.1] than in ultrasound (1.0) [0.1-9.7]. CT scan and ultrasound are equivalent for the diagnosis of acute cholecystitis, but CT scan is more efficient for the diagnosis of complicated cases (Youden index J 0.3 vs 0.001). CONCLUSION: It is possible to place the surgical indication of cholecystectomy on the only data of the CT scan. We propose a decision-making algorithm that uses the CT scan to make the diagnosis and decide on emergency treatment for complicated cases or that allows us to propose a delayed surgery for simple cholecystitis.
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