title: Masson's Tumor Masquerading as a Papillary Adenocarcinoma on Fine Needle Aspiration Cytology: A Case Report.
abstract: Intravascular papillary endothelial hyperplasia, previously known as Masson's tumor, is a relatively uncommon reactive endothelial proliferation that occurs most commonly in the vessels of the head, neck, and extremities. We report a case of intravascular papillary endothelial hyperplasia in the neck in a 40-year-old female that was misdiagnosed as papillary adenocarcinoma on fine needle aspiration. The cytologic picture of intravascular papillary endothelial hyperplasia is diverse, making a pinpoint diagnosis of this entity difficult on fine needle aspiration.
authors.affiliation: Department of Pathology, Lady Hardinge Medical College, DELHI, INDIA.
authors.forename: Anita
authors.initials: A
authors.lastname: Nangia
authors.forename: Shivali
authors.initials: S
authors.lastname: Sehgal
authors.forename: Kiran
authors.initials: K
authors.lastname: Agarwal
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000175:diagnosis / Q000473:pathology; D000328:Adult; D044963:Biopsy, Fine-Needle; D003937:Diagnosis, Differential; D042783:Endothelial Cells / Q000473:pathology*; D005260:Female; D006801:Humans; D006965:Hyperplasia / Q000175:diagnosis* / Q000473:pathology*; D009333:Neck / Q000473:pathology