A RARE SQUAMOUS CELL CARCINOMA OF MANDIBLE, MIMICKING CHRONIC OSTEOMYELITIS: CASE REPORT
Oral cavity squamous cell carcinoma (SCC) is the most common malignancy of the head and neck, excluding non-melanoma skin cancer, accounting for 30% of all head and neck cancers. SCC accounts for approximately 90% of oral and oropharyngeal malignancies. (1) Of all head and neck squamous cell carcinomas (SCC), oral SCC with mandibular invasion has the highest local recurrence rates. the study by Langdon JD et.al. Shows 194 carcinomas of the oral cavity, tumours involving the mandibular alveolus had one of the highest recurrence rates (61.9%) and one of the lowest 5-year overall survival (25.8%). (2) The ratio between male and female is approximately 2:1. More prevalent areas for oral cancers include the tongue, oropharynx and floor of the mouth. These regions are less keratinized and more susceptible to carcinomas. Oral SCC spreads by local infiltration or metastasis to regional lymph nodes but distant metastasis is rare and maxillary lesions have a greater tendency to metastasize. (3)Alveolar ridge SSC comprised 9% of all patients with oral SCC according to a report by Ildstad et al.(4) The second position is accounted for by Alveolar ridge SSC, with the first being tongue carcinoma according to site-specificity.According to the local rate of recurrence by site, mandibular alveolus carcinoma has the maximum local rate of recurrence (26/42), the second being tongue carcinoma (20/47). Oral squamous cell carcinoma of the mandibular region is noticed to have the lowest rate of survival particularly in comparison to all other oral carcinomas. (5)
Keywords: Oral squamous cell carcinoma, Mandibular invasion, Mandibular resection, Osteomyelitis, cigarette smoking, tobacco.