{"title":"计算机断层扫描在确定结直肠病变是良性还是恶性以及结直肠癌术前分期与组织病理学相关性方面的准确性","authors":"Deepika Nair, Rinku Mercy Thomas","doi":"10.36106/ijsr/6400251","DOIUrl":null,"url":null,"abstract":"Objective-To determine the accuracy of Multi Detector CT in characterizing colorectal lesions as benign or malignant - and its correlation with\nhistopathology by studying bowel wall characteristics. - Methods 55 patients referred to the Department of Radiodiagnosis at a tertiary care centre\nin Trivandrum for contrast CT abdomen who had abnormal bowel wall thickening on CT. Lesions are classied on CT as benign or malignant\nbased on bowel wall characteristics of wall thickening and staging is done in case of colorectal carcinoma. The ndings are then compared with the\nhistopathological diagnosis. Results- Overall, CT had a sensitivity of 94.9%, specicity of 93.8%, Positive Predictive Value of 97.4% and a\nNegative Predictive Value of 88.2% in the diagnosis of malignant lesions. Accuracy of CT in diagnosing malignant lesions is 94.5%. Positive\nlikelihood ratio is 15.2. and negative likelihood ratio is 0.05.CT is an excellent modality for tumour (T) staging in colorectal malignancy, as per our\nstudy, K=0.806 (excellent agreement).CT, though not highly accurate, can be used for lymph nodal (N) staging in colorectal malignancy, as per our\nstudy, K= 0.213 (fair agreement). Conclusion- Due to its high sensitivity and specicity, MDCT is an excellent modality in the diagnosis and\ndifferentiation of benign and malignant lesions of the colon and rectum,.It offers early detection of colorectal malignancy, provides staging of\nmalignancies, helps in detection of metastasis, thereby aiding in the choice of treatment strategy. CT is an excellent modality for tumour (T) staging\nin colorectal malignancy, as per our study, K=0.806 (excellent agreement).","PeriodicalId":14358,"journal":{"name":"International journal of scientific research","volume":"86 3","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"ACCURACY OF COMPUTED TOMOGRAPHY IN CHARACTERISATION OF COLORECTAL LESIONS AS BENIGN OR MALIGNANT AND IN PRE-OP STAGING OF COLORECTAL CARCINOMA WITH HISTOPATHOLOGICAL CORRELATION\",\"authors\":\"Deepika Nair, Rinku Mercy Thomas\",\"doi\":\"10.36106/ijsr/6400251\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Objective-To determine the accuracy of Multi Detector CT in characterizing colorectal lesions as benign or malignant - and its correlation with\\nhistopathology by studying bowel wall characteristics. - Methods 55 patients referred to the Department of Radiodiagnosis at a tertiary care centre\\nin Trivandrum for contrast CT abdomen who had abnormal bowel wall thickening on CT. Lesions are classied on CT as benign or malignant\\nbased on bowel wall characteristics of wall thickening and staging is done in case of colorectal carcinoma. The ndings are then compared with the\\nhistopathological diagnosis. Results- Overall, CT had a sensitivity of 94.9%, specicity of 93.8%, Positive Predictive Value of 97.4% and a\\nNegative Predictive Value of 88.2% in the diagnosis of malignant lesions. Accuracy of CT in diagnosing malignant lesions is 94.5%. Positive\\nlikelihood ratio is 15.2. and negative likelihood ratio is 0.05.CT is an excellent modality for tumour (T) staging in colorectal malignancy, as per our\\nstudy, K=0.806 (excellent agreement).CT, though not highly accurate, can be used for lymph nodal (N) staging in colorectal malignancy, as per our\\nstudy, K= 0.213 (fair agreement). Conclusion- Due to its high sensitivity and specicity, MDCT is an excellent modality in the diagnosis and\\ndifferentiation of benign and malignant lesions of the colon and rectum,.It offers early detection of colorectal malignancy, provides staging of\\nmalignancies, helps in detection of metastasis, thereby aiding in the choice of treatment strategy. CT is an excellent modality for tumour (T) staging\\nin colorectal malignancy, as per our study, K=0.806 (excellent agreement).\",\"PeriodicalId\":14358,\"journal\":{\"name\":\"International journal of scientific research\",\"volume\":\"86 3\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International journal of scientific research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.36106/ijsr/6400251\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International journal of scientific research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.36106/ijsr/6400251","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
ACCURACY OF COMPUTED TOMOGRAPHY IN CHARACTERISATION OF COLORECTAL LESIONS AS BENIGN OR MALIGNANT AND IN PRE-OP STAGING OF COLORECTAL CARCINOMA WITH HISTOPATHOLOGICAL CORRELATION
Objective-To determine the accuracy of Multi Detector CT in characterizing colorectal lesions as benign or malignant - and its correlation with
histopathology by studying bowel wall characteristics. - Methods 55 patients referred to the Department of Radiodiagnosis at a tertiary care centre
in Trivandrum for contrast CT abdomen who had abnormal bowel wall thickening on CT. Lesions are classied on CT as benign or malignant
based on bowel wall characteristics of wall thickening and staging is done in case of colorectal carcinoma. The ndings are then compared with the
histopathological diagnosis. Results- Overall, CT had a sensitivity of 94.9%, specicity of 93.8%, Positive Predictive Value of 97.4% and a
Negative Predictive Value of 88.2% in the diagnosis of malignant lesions. Accuracy of CT in diagnosing malignant lesions is 94.5%. Positive
likelihood ratio is 15.2. and negative likelihood ratio is 0.05.CT is an excellent modality for tumour (T) staging in colorectal malignancy, as per our
study, K=0.806 (excellent agreement).CT, though not highly accurate, can be used for lymph nodal (N) staging in colorectal malignancy, as per our
study, K= 0.213 (fair agreement). Conclusion- Due to its high sensitivity and specicity, MDCT is an excellent modality in the diagnosis and
differentiation of benign and malignant lesions of the colon and rectum,.It offers early detection of colorectal malignancy, provides staging of
malignancies, helps in detection of metastasis, thereby aiding in the choice of treatment strategy. CT is an excellent modality for tumour (T) staging
in colorectal malignancy, as per our study, K=0.806 (excellent agreement).