Background: The ability of CT to deliver higher spatial resolution and shorter scanning times over other modalities has been considered positive points. The CT is being used in clinical applications such as CT colonography, CT angiography, CT urography etc. The present study was conducted to assess diagnostic accuracy of follow-up non-contrast abdominal CT scans in cancer patients. Materials & methods: The present retrospective study comprised of 360 CTs of abdomen done with or without contrast medium of both genders. Before starting the study, a prior approval from institutional ethical committee was obtained. Three well experienced MD radiologists independently analyzed all scout and final images for interpretation of findings. The inter-observer bias was eliminated following comparison of all findings of all radiologists. Cancer related findings (CRFs) were classified based on location and type of findings. Lymph nodes with size above 1 cm were considered positive for the study. Lymph nodes <1cm were excluded. Results: Axillary lymphadenopathy was seen in 2 cases and inguinal lymphadenopathy in 1 case. Lung metastasis was observed in 8 cases and liver metastasis in 17 cases, colon wall thickening in 1 case, pleural effusion in 5 cases, pericardial effusion in 3 cases, pancreatic duct irregularities in 3 cases and lymphoma in 2 cases. All the radiologists had right findings in all cases. There was no inter- observer bias.  Conclusion: The evaluation showed that follow-up NECT has a low non-detection rate for CRFs of the abdomen as compared to combined with and without contrast CT.
Key words: Abdominal, Computed tomography.

Received:  10 May 2018                                                   Revised: 14 June 2018                                        Accepted: 18 June 2018

Correspondence to: Dr. Niranjan Bapusaheb Patil,  Professor, Department of Radio-diagnosis, DY Patil Medical College & hospital, Kolhapur, Maharashtra, India

This article may be cited as: Wadhwani ND, Patil NB. Evaluation of Diagnostic Accuracy of follow-up non-contrast abdominal CT scans in cancer patients: A Retrospective Analysis. Int J Res Health Allied Sci 2018; 4(4):97-100.