The literature analysis revealed that even in immunocompetent/otherwise healthy individuals mucormycosis infection has a worldwide distribution. What might be the real predisposing factors involved in its pathogenesis in such patients and the real causes of this peculiar geographic distribution still remains unknown. It is likely that, in our cases, a chronic insult of a well-defined and localized body area might have resulted in a local immunocompromission, thus fostering the development of an invasive fungal infection.

IntroductionJuvenile xanthogranuloma is a rare non-Langerhans cell histiocytosis that usually occurs during infancy and early childhood. The presence of single or multiple raised cutaneous lesions characterize this self-healing disorder. Extracutaneous sites are rare.Case presentationWe present a rare case of oral juvenile xanthogranuloma in a 49-year-old Caucasian woman. The histopathologic diagnosis of the lingual neoformation was histiocitary proliferation with the presence of giant cells, Touton type, compatible with juvenile xanthogranuloma.ConclusionTo establish an accurate diagnosis, microscopic evaluation and immunohistochemical staining are necessary. Dentists, dermatologists and general practitioners may be the first to recognize this rare condition during the inspection of the oral cavity.

Lymphomas are defined as heterogeneous malignancies of the lymphatic system characterized by a proliferation of lymphoid cells or their precursors. Malignant lymphoma of the oral cavity has been described previously although reports on the occurrence of intraoral extranodal T-cell lymphomas are scarce. Oral lesions may appear as a painless enlargement, erythematous, often with surface ulceration secondary to trauma. This is a report of a rare case in which a specific subtype of T-cell lymphoma appeared in the oral cavity.

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Although metastases to the oral cavity are uncommon, clinicians may play a crucial role also in the diagnosis of primary tumors.

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