1. Klimstara DS, Lam AL, Paradis V, Schimacher P. Tumours of gall bladder and Extrahepatic bile ducts. In: World Health Organization classification of Tumours. Pathology and genetics of Tumours of the digestive system. 5th ed. Lyon: IARCPress; 2019.
2. Kumar R, Srinivasan R, Gupta N, et al. Spectrum of gallbladder malignancies on fine-needle aspiration cytology: 5 years retrospective single institutional study with emphasis on uncommon variants. Diagn Cytopathol. 2017;45(1):36–42.
3. Yadav R, Jain D, Mathur SR, Iyer VK. Cytomorphology of neuroendocrine tumours of the gallbladder. Cytopathology. 2016;27(2):97–102.
4. Afify AM, Al-Khafaji BM, Kim B, Scheiman JM. Endoscopic ultrasound-guided fine needle aspiration of the pancreas. Diagnostic utility and accuracy. Acta Cytol. 2003;47(3):341–8.
5. Di Stasi M, Lencioni R, Solmi L, et al. Ultrasound-guided fine needle biopsy of pancreatic masses: results of a multicenter study. Am J Gastroenterol. 1998;93(8):1329–33.