Oral Chronic Ulcer: A Diagnostic Challenge

The document presents several case reports highlighting diagnostic challenges in oral medicine. One case involved an 85-year-old man with an ulcerated lesion in the gingiva, which did not regress despite various treatments, and remained undiagnosed. Another case described a 34-year-old male with a Killian polyp in the maxillary sinus, which was successfully excised without relapse after 4 months. A 62-year-old male was diagnosed with a peripheral calcifying odontogenic cyst after presenting with a nodular lesion in the alveolar ridge, with no recurrence after 8 months. An 8-year-old female had a combined nevus (blue and intramucosal) on the oral mucosa, confirmed by histologic analysis. Lastly, a 21-month-old girl developed green pigmentation of teeth due to severe liver dysfunction and hyperbilirubinemia following intensive neonatal care for multiple complications. Each case underscores the complexity of diagnosing oral lesions and the importance of thorough investigation and follow-up.