Two cases of imatinib induced oral pigmentation affecting the palate.

Background: Medication-related oral pigmentation is a unique yet benign finding in the dental setting. As new antineoplastic agents emerge, it is likely that this documented manifestation will continue to grow.

Case Description: Here, we describe two case presentations of imatinib-related hyperpigmentation of the palate.

A new species of Vehilius Godman, 1900 (Lepidoptera, Hesperiidae, Hesperiinae) endemic to the Caatinga, northeastern Brazil: taxonomy, biology and behavior.

A new species belonging to the genus Vehilius Godman, 1900, Vehilius jabre Medeiros, Souza & Kerpel sp. nov., endemic to the Caatinga biome, northeastern Brazil, is here described based on data from adult and immature stages.

Malignant rhabdoid tumor of the floor of mouth: first reported case in the oral cavity of an adult.

Malignant rhabdoid tumors (MRTs) are exceedingly rare lesions. To our knowledge, only 2 cases have been reported in the oral cavity, with both examples occurring in infants. The current case is the third reported case of MRT of the oral cavity and the first reported case to occur in an adult at this location.

Klippel-Trenaunay syndrome: report of case affecting oral cavity.

A patient is described with clinical characteristics suggesting a vascular syndrome that included an oral component. After an intraoral biopsy was taken and further evaluation performed, it was determined that the patient exhibited criteria consistent with Klippel-Trenaunay syndrome, a rare congenital vascular disorder.