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Colorectal Cancer Patient Characteristics, Treatment and Survival in Oman - a Single Center Study

  • Kumar, Shiyam (Department of Medicine, Sultan Qaboos University Hospital) ;
  • Burney, Ikram A (Department of Medicine, Sultan Qaboos University Hospital) ;
  • Zahid, Khawaja Farhan (Department of Medicine, Sultan Qaboos University Hospital) ;
  • Souza, Philomena Charlotte D (Nursing Directorate, Sultan Qaboos University Hospital) ;
  • Belushi, Muna AL (Nursing Directorate, Sultan Qaboos University Hospital) ;
  • Mufti, Taha Dawood (Department of Medicine, Sultan Qaboos University Hospital) ;
  • Meki, Waeil AL (Department of Medicine, Sultan Qaboos University Hospital) ;
  • Furrukh, Muhammad (Department of Medicine, Sultan Qaboos University Hospital) ;
  • Moundhri, Mansour S AL (College of Medicine and Health Sciences, Sultan Qaboos University)
  • Published : 2015.07.13

Abstract

Background: Colorectal cancer is the most common gastrointestinal cancer in Oman with an increasing incidence. We here report the presenting features, treatment outcomes and survival in a University hospital in Oman and compare our data with regional and international studies. Materials and Methods: Medical records of patients with colorectal cancer were reviewed retrospectively between June 2000 and December 2013 and were followed until June 2014. Results: A total of 162 patients were diagnosed with colorectal cancer. The majority were males (58.6%), with a median age of 56 years. Rectum was involved in 29.6% of patients, followed by ascending and sigmoid colon. The majority of patients had stage III (42.6%) and stage IV (32.7%) disease at presentation. K-Ras status was checked for 79 patients, and 41 (51.9%) featured the wild type. Median relapse free survival was 22 months. Median overall survival for all patients was 43 months. Observed 5 year overall survival (OS) for stages I, II and III was 100%, 60% and 60% respectively. On Log rank univariate analysis, age, BMI, diabetes, hypertension, metformin use, stage, clinical nodal status for rectal cancer, pathological T and nodal status, site of metastasis, surgical intervention, chemotherapy, radiotherapy, chemotherapy regimen, no of cycles of chemotherapy, response, RFS, site of recurrence and administration of $2^{nd}$ line chemotherapy were significant factors affecting OS. On Cox regression multivariate analysis none of the factors independently affected the OS. Conclusions: The majority of patients present with advanced disease and at young age. The survival rates are comparable to the published regional and international literature.

Keywords

Chemotherapy;olon cancer;metastasis;recurrence;Oman

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