title: Fine-needle aspiration of malignant mesothelioma with unusual morphologic features: a case report.
abstract: Malignant mesothelioma is an aggressive neoplasm linked to asbestos exposure. Most mesothelioma patients present with pleural effusion and the fluid is typically sent for cytological examination. Therefore, cytopathologists are most familiar with features of mesothelioma in fluid preparations. We present here a case of malignant mesothelioma with unusual cytological features diagnosed on FNA. The diagnosis was confirmed by immuno-histochemical and electron microscopic studies. In addition, we compare the cytomorphological features observed in malignant effusion versus fine-needle aspiration.
authors.affiliation: Department of Pathology, Loyola University Medical Center, Maywood, IL 60153, USA. ukapur@lumc.edu
authors.forename: Umesh
authors.initials: U
authors.lastname: Kapur
authors.forename: Eva M
authors.initials: EM
authors.lastname: Wojcik
mesh_terms: D000369:Aged, 80 and over; D044963:Biopsy, Fine-Needle; D006801:Humans; D008168:Lung / Q000473:pathology; D008297:Male; D008654:Mesothelioma / Q000175:diagnosis* / Q000473:pathology*; D008871:Microvilli / Q000648:ultrastructure; D016066:Pleural Effusion, Malignant / Q000473:pathology; D010997:Pleural Neoplasms / Q000175:diagnosis* / Q000473:pathology*