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Introduction : Molluscum contagiosum (MC) is a viral cutaneous infection which is passed on by direct or indirect contact. It commonly affects children, but oral mucosa manifestations are rare. Observation: The case of a 70-year-old patient, affected by rheumatoid polyarthritis treated by immunomodulators, and presenting MC of the oral mucosa, is reported. Discussion: In a systematic review of the literature, 7 cases of MC presenting the same oral manifestations have been described. The clinical features differ between immunocompetent and immunosuppressed patients. Conclusion: In cases of recurring MC, local surgical treatment and regular follow-up must be proposed to the patient. [ABSTRACT FROM AUTHOR]

Introduction: Pyostomatitis vegetans is a rare dermatosis which is manifested by yellowish-white pustules and inflammatory vesiculous lesions of the oral mucosa in the gum, the vestibule, the soft and hard palate, and sometimes the lips. PV is often associated with inflammatory bowel chronic diseases (IBDs) such as ulcerative colitis and Crohn's disease. Observation: An 80- year-old patient with Crohn's disease consulted for linear ulceration localized on the lower labial vestibule of the left cheek and on the right upper vestibule. The PV diagnosis was made after biopsy and the lesions regressed under local corticosteroid application. Discussion: The characteristic symptoms and histology (negative direct and indirect immunofluorescence) enable the diagnosis of PV and eliminate pemphigus vegetans and pyoderma gangrenosum. Peripheral eosinophilia and eosinophils on a histological section may be useful for monitoring disease activity. Treatment is based on local or systemic corticosteroids depending on the intensity of the oral and gastrointestinal involvement. Conclusion: Upon discovery of PV lesions, testing for IBDs is critical in order to establish a treatment as early as possible. [ABSTRACT FROM AUTHOR]

Introduction: Oral melanocytic nevi (OMN) are rare benign tumours of the oral mucosa. Observation: The case of compound OMN of the palatal mucosa in a 3-year-old boy is reported. Discussion: OMN and oral malignant melanoma (OMM) are localized preferentially to the palate and have a similar clinical appearance. This is a histological diagnosis. The potential malignant transformation of OMN has never been determined. [ABSTRACT FROM AUTHOR]