nasopharyngeal carcinomaA rare (in the West) malignancy which is endemic in regions of southern China—where it comprises up to 18% of cancers—as well as in southeast Asia. It is linked to EBV infection, diets high in nitrosamines and inhaled carcinogens. It is more common in males and has a peak incidence of age 40 to 50.
Lymphoma (DLCBL, Hodgkin's), reactive lymphoid proliferation, sarcomas.
Stage dependant; 5-year survival is 55%.
Nasopharyngeal carcinomas (WHO, 2005)
- Keratinising squamous cell carcinoma
- Non keratinsing carcinoma
- Basaloid squamous cell carcinoma
- Nasopharyngeal cancer, staging
• Stage I—Lesion confined to nasopharynx.
• Stage II
A) Lesion extends to oropharynx and/or nasal fossa.
B) Lesion extends to nearby lymph nodes or to parapharyngeal region.
• Stage III—Lesion spread to lymph nodes on both sides of the neck or nearby bones or sinuses.
• Stage IV
A) Spread beyond nasopharynx to other areas in head; possible spread to regional lymph nodes.
B) Spread beyond nasopharynx to other areas in head and to lymph nodes above clavicle, or are ≥ 6 cm in greatest dimension.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
nasopharyngeal carcinomaNasopharyngeal cancer A rare malignancy, which is endemic to regions of southern China and Southeast Asia; persons with serologic markers for EBV–IgA antibodies against EBV capsid antigen and/or neutralizing antibodies against EBV-specific DNase have a 3-fold cumulative risk of nasopharyngeal cancer if one marker was positive and a 35-fold risk if both markers are positive. See Epstein-Barr virus.
Stage I Lesion confined to nasopharynx
A Lesion extends to oropharynx and/or nasal fossa
B Lesion extends to nearby lymph nodes or to parapharyngeal region
Stage III Lesion spread to lymph nodes on both sides of the neck or to nearby bones or sinuses
A Spread beyond nasopharynx to other areas in head, and possibly to nearby lymph nodes
B Spread beyond nasopharynx to other areas in head and to lymph nodes above clavicle or are ≥ 6 cm
C Lesion has metastasized
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.