Hoq, Mohammad Injamul, Brinta Bhowmik, and Umme Sayma Roshni. “Appearance Can Be Deceptive: A Case Report on Raised CA 19-9 in a Patient With Cholecystitis and Without Evidence of Malignancy”. Bangladesh Journal of Medical Science 23, no. 3 (July 29, 2024): 869–872. Accessed December 6, 2025. https://www.banglajol.info/index.php/BJMS/article/view/75122.