title: Diagnosis of pulmonary blastoma by fine-needle aspiration biopsy: cytologic and immunocytochemical findings.
abstract: A preoperative diagnosis of pulmonary blastoma was established by fine-needle aspiration (FNA) cytology in a patient who presented with a pulmonary mass discovered incidentally on chest x-ray. At the time of computed tomography-guided FNA, an on-site preliminary diagnosis of poorly differentiated carcinoma was made after examination of a rapid hematoxylineosin (H&E)-stained smear. Malignant epithelial and stromal elements could be demonstrated on smears subsequently stained with the H&E, Papanicolaou, and Diff-Quik methods. The cell block preparation showed a distinctly biphasic malignant tumor with classic morphologic features of pulmonary blastoma. We present the clinical, cytologic, immunocytochemical, and histologic findings of this case and re-emphasize the valuable contribution of adequate cell block preparations to accurate diagnosis of fine-needle aspiration material.
authors.affiliation: Department of Pathology, Los Angeles County-University of Southern California Medical Center 90033.
authors.forename: M M
authors.initials: MM
authors.lastname: Cosgrove
authors.forename: P T
authors.initials: PT
authors.lastname: Chandrasoma
authors.forename: S E
authors.initials: SE
authors.lastname: Martin
mesh_terms: D000199:Actins / Q000032:analysis; D001707:Biopsy, Needle; D003581:Cytodiagnosis; D006801:Humans; D007150:Immunohistochemistry; D007633:Keratins / Q000032:analysis; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D013194:Staining and Labeling; D014746:Vimentin / Q000032:analysis
chemical_list: D000199:Actins; D014746:Vimentin; D007633:Keratins