title: Usefulness of S100P in diagnosis of adenocarcinoma of pancreas on fine-needle aspiration biopsy specimens.
abstract: Even though the cytologic criteria for pancreatic ductal adenocarcinoma (PDA) on fine-needle aspiration biopsy (FNAB) specimens have been well defined, a diagnostic challenge is still present. We immunohistochemically evaluated the diagnostic value of S100P on cell-block and/or smear preparations in 58 cases of FNAB specimens of the pancreas. The 58 cases were divided into 4 groups: 1, 32 cases of PDA; 2, 6 cases with an atypical or "suspicious" diagnosis; 3, 14 cases of benign or reactive ductal epithelium; and 4, 6 cases of endocrine tumor. Positive immunoreactivity for S100P was observed in all cases in groups 1 and 2, whereas only 1 of 14 cases in group 3 was positive for S100P. All cases in group 4 were negative for S100P. S100P is a sensitive and specific marker for the detection of PDA on FNAB specimens on cell-block and smear preparations.
authors: Department of Laboratory Medicine, Geisinger Medical Center, Danville, PA 17822, USA.
authors: Hongbing
authors: H
authors: Deng
authors: Jianhui
authors: J
authors: Shi
authors: Myra
authors: M
authors: Wilkerson
authors: Steven
authors: S
authors: Meschter
authors: William
authors: W
authors: Dupree
authors: Fan
authors: F
authors: Lin
mesh_terms: D007516:Adenoma, Islet Cell / Q000175:diagnosis / Q000378:metabolism; D014408:Biomarkers, Tumor / Q000378:metabolism*; D044963:Biopsy, Fine-Needle; D018273:Carcinoma, Islet Cell / Q000175:diagnosis / Q000378:metabolism; D021441:Carcinoma, Pancreatic Ductal / Q000175:diagnosis* / Q000378:metabolism; D002352:Carrier Proteins / Q000378:metabolism*; D003937:Diagnosis, Differential; D004847:Epithelial Cells / Q000378:metabolism / Q000473:pathology; D006801:Humans; D007124:Immunoenzyme Techniques; D007515:Islets of Langerhans / Q000378:metabolism / Q000473:pathology; D009687:Nuclear Proteins / Q000378:metabolism*; D010183:Pancreatic Ducts / Q000378:metabolism / Q000473:pathology; D010190:Pancreatic Neoplasms / Q000175:diagnosis* / Q000378:metabolism
chemical_list: D014408:Biomarkers, Tumor; D002352:Carrier Proteins; D009687:Nuclear Proteins; C496889:S100PBP protein, human