Growth process of small pancreatic carcinoma: A case report with imaging observation for 22 months

Figure 4 Histopathological findings. A: The mass is composed of moderately differentiated tubular adenocarcinoma with desmoplastic fibrosis, resulting in a diagnosis of IDC (HE, original magnification × 20); B: The tumor mass includes macroscopic cystic components (*) lined by normal ductal epithelium, suggestive of retention cysts in carcinoma (HE, original magnification × 1); C: The lining of the dilated branch duct is composed of low-papillary columnar cells with copious intracellular mucus, resulting in a diagnosis of branch duct type intraductal papillary-mucinous adenoma with mild atypia (HE, × 40).