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  • Title: Pancreatic cystic lesions without overt cytologic atypia: proposed diagnostic categories for endoscopic ultrasound-guided fine-needle aspiration cytology with utilization of fluid carcinoembryonic antigen level.
    Author: Madan R, Khan E, Cuka N, Olyaee M, Tawfik O, Fan F.
    Journal: Acta Cytol; 2012; 56(1):34-40. PubMed ID: 22236743.
    Abstract:
    OBJECTIVES: It was the aim of this study to examine pancreatic cyst cases that lack markedly atypical or malignant epithelium on endoscopic ultrasound-guided fine-needle aspirations. STUDY DESIGN: We conducted a retrospective case review study, including 24 cases that were either acellular or lacked cytologic atypia and were subsequently resected. The cases were retrospectively divided into 3 categories: (1) non-diagnostic, (2) cyst contents only, and (3) cyst contents with bland-appearing epithelium. The cyst contents were subdivided into mucinous and non-mucinous types. The cytologic diagnoses were correlated with cyst fluid carcinoembryonic antigen (CEA) levels and subsequent histologic diagnoses. RESULTS: Category 1 comprised 4 cases: 2 cases (CEA >800 ng/ml) with mucin-producing neoplasms and 2 cases (CEA not determined) with microcystic serous cystadenomas. Category 2 included 4 cases with non-mucinous and 4 with mucinous contents. In the first subgroup, 2 cases (CEA >800 ng/ml) showed mucinous cystic neoplasms and 2 cases (CEA negligible or not determined) pseudocysts. In the second subgroup, there were 3 cases with neoplastic mucinous cysts (1 CEA >800 ng/ml, 2 not determined) and 1 case with a lymphoepithelial cyst with mucinous metaplasia (CEA >800 ng/ml). Almost all cases (10/11) in category 3 had neoplastic mucinous cysts regardless of the CEA levels. CONCLUSIONS: The proposed 3 cytologic categories of pancreatic cystic lesion combined with cyst fluid CEA levels provide useful clinical information.
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