Oral Squamous Cell Carcinoma
Also written as: OSCC — Oral Squamous Cell Carcinoma
The most common malignant neoplasm of the oral cavity, arising from the squamous epithelium of the mucosa, with the floor of mouth, lateral tongue, and lower lip as predominant sites.
Full Definition
Oral squamous cell carcinoma (OSCC) accounts for the vast majority of oral malignancies and arises from the squamous epithelium lining the oral cavity proper. Major risk factors include tobacco use, alcohol consumption, betel nut chewing, and, for lip carcinoma, chronic actinic damage. OSCC may arise de novo or in association with a preceding potentially malignant disorder. In editorial work, editors must be attentive to site-specific descriptors (e.g., tongue, floor of mouth, gingiva) and must not conflate OSCC with oropharyngeal squamous cell carcinoma, which has a distinct HPV-associated aetiology and is classified separately. Staging references should align with the TNM classification in use at the time of the study.
Usage
Usage note: Do not use 'oral cancer' and 'OSCC' as interchangeable terms without qualification; 'oral cancer' may encompass salivary gland tumours, sarcomas, and lymphomas. OSCC refers specifically to squamous cell carcinoma of the oral cavity.
In Context
- "The patient was diagnosed with stage III oral squamous cell carcinoma of the lateral tongue." — Oncology referral letter
- "OSCC incidence is rising among young non-smoking adults in several high-income countries." — Epidemiological report