## Histological Types of Laryngeal Carcinoma **Key Point:** Squamous cell carcinoma (SCC) accounts for approximately 90–95% of all laryngeal malignancies, making it overwhelmingly the most common type. ### Epidemiology and Risk Factors - **Smoking** and **alcohol use** are the primary risk factors for SCC of the larynx - The laryngeal epithelium is lined by stratified squamous epithelium, predisposing to SCC - Incidence increases significantly with age (peak 60–70 years) ### Comparison of Laryngeal Carcinoma Types | Histological Type | Frequency | Key Features | Prognosis | | --- | --- | --- | --- | | Squamous Cell Carcinoma | 90–95% | Most common; associated with smoking/alcohol | Variable (stage-dependent) | | Adenocarcinoma | 2–5% | Arises from mucous glands; rare | Generally poor | | Small Cell Carcinoma | <1% | Neuroendocrine; aggressive | Very poor | | Verrucous Carcinoma | 1–2% | Low-grade variant of SCC; slow growth | Better than conventional SCC | **High-Yield:** Squamous cell carcinoma is the default answer for any question about laryngeal malignancy histology unless the stem specifically mentions adenocarcinoma, neuroendocrine features, or a rare variant. ### Clinical Pearl Verrucous carcinoma, though a variant of SCC, has a distinctly better prognosis and slower growth pattern, but it remains rare (<2% of cases). It is often associated with tobacco and betel nut use in endemic regions. **Mnemonic:** **SAVE** — **S**quamous (90%), **A**denocarcinoma (2–5%), **V**errucous (1–2%), **E**ndocrine/small cell (<1%)
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