US & Canada : lymphomas & leukemia,thyroid sarcomas, melanoma,
Limited response to treatment and poor prognosis suggest tumor biology is different from other age groups having the same tumors.
1. Ca nce r Epidemiology in O lde r Adole sce nts a nd Young Adults 15 to 29 Ye a r s of Age INCLUDING SEER INCIDENCE AND SURVIVAL: 1975-2000 2. POPULATION BASED CANCER REGISTRY, CHENNAI Cancer Institute (WIA), Adyar, Chennai
1. Verschuur HP, Irish JC, O'Sullivan B, Goh C, Gullane PJ, Pintilie M. A matched control study of treatment outcome in young patients with squamous cell carcinoma of the head and neck. Laryngoscope. Feb 1999;109(2 Pt 1):249-58 2. Veness MJ, Morgan GJ, Sathiyaseelan Y, Gebski V. Anterior tongue cancer and the incidence of cervical lymph node metastases with increasing tumour thickness: should elective treatment to the neck be standard practice in all patients?. ANZ J Surg. Mar 2005;75(3):101-5
Types : 16,18, 31, 33, 35 associated with hnscc.
MC type : hpv type 16 ; 90 – 95 % of hpv +ve tumors
Hpv +ve tumors - typically small 't' size but with large ,cystic nodes
1. Impact of HPV in Oropharyngeal Cancer Journal of Oncology Volume 2011 (2011), Article ID 509036, 6 pages doi:10.1155/2011/509036 Linda Marklund and Lalle Hammarstedt Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Karolinska University Hospital, Sweden.