COX-2 expression in oral lichen planus.

Oral lichen planus (OLP) is a chronic inflammatory disease of unknown cause, which possesses the potential for malignant transformation. Cyclooxygenases (COX) 1 and 2 are two enzymes known to convert arachidonic acid into prostaglandins. Recent studies have shown an overexpression of COX-2 in oral squamous cell carcinoma and its precursor lesions.

Solitary superficial microcystic lymphatic malformation (lymphangioma circumscriptum) of the gingiva.

Background: Lymphatic malformations are uncommon, hamartomatous, developmental aberrations of the lymphatic system. The case presented in this report is a rare solitary gingival involvement of a microcystic-type lymphatic malformation.

Methods: The lesion presented clinically as a small vesicular swelling of a buccal interdental papilla in a 16-year-old girl.

Gingival involvement in a case series of patients with acquired immunodeficiency syndrome-related Kaposi sarcoma.

Background: This case series presents the polymorphic clinical characteristics of gingival acquired immunodeficieny syndrome (AIDS)-related Kaposi sarcoma (KS), a malignancy that is gradually becoming uncommon in developed nations. An up-to-date overview of the related epidemiology, etiopathogenesis, histopathology, and treatment is provided, along with a pictorial guide to ease clinical diagnosis.

Methods: The oral/maxillofacial pathology records at Aristotle University and the University of Geneva were retrospectively reviewed.

Facial and perioral primary impetigo: a clinical study.

Impetigo is the most common skin infection in children. The face, especially the perioral region, is one of the most frequently involved areas. Impetigo is a disease that interests the pediatric dentist, as it poses significant problems in its differential diagnosis from other conditions.