title: Cytologic mimics of non-Hodgkin lymphoma in the head and neck.
abstract: Non-lymphoid small round blue cell tumors of the head and neck are particularly difficult to diagnose when metastatic to a lymph node. The cytopathologist or surgical pathologist evaluating these lesions has to be aware of the various non-hematopoetic neoplasms that present in the head and neck area that can mimic non-Hodgkin lymphoma. Presented here are the various lesions commonly seen which needs to be entertained depending on where in the head and neck the lesion is located. More recently, a plethora of HPV related head and neck tumors has been described and these lesions add to the mix in this challenging milieu of cases.
authors.affiliation: Department of Pathology, Roswell Park Cancer Institute, Elm and Carlton St, Buffalo, New York 14263. Electronic address: Lourdes.Ylagan@RoswellPark.org.
authors.forename: Lourdes R
authors.initials: LR
authors.lastname: Ylagan
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis; D001706:Biopsy; D003937:Diagnosis, Differential; D006258:Head and Neck Neoplasms / Q000737:chemistry / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D008228:Lymphoma, Non-Hodgkin / Q000737:chemistry / Q000473:pathology*; D011237:Predictive Value of Tests
chemical_list: D014408:Biomarkers, Tumor
keywords: Basaloid squamous carcinoma; Medullary thyroid carcinoma; Merkel cell carcinoma; Olfactory neuroblastoma; Rhabdomyosarcoma; SNUC