Chronic ulcerative stomatitis (CUS) is a mucocutaneous condition characterized by chronic relapsing and remitting oral ulcers and erosions. This condition remains under-recognized among dermatopathologists, possibly because of common misdiagnosis as oral erosive lichen planus (LP). We report five cases of CUS in order to raise awareness of this uncommon condition. All patients presented with desquamative gingivitis and/or oral erosions, with biopsies showing lichenoid mucositis and epithelial nuclear IgG deposition on direct immunofluorescence. Recognition of the characteristic direct immunofluorescence findings allows for distinction of chronic ulcerative stomatitis from oral LP and appropriate therapy.

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Angiosarcomas are rare, malignant neoplasms of vascular origin that account for less than 1% of all soft tissue tumors. Angiosarcomas of the oral cavity are especially rare, and brachytherapy may be prescribed as a localized treatment to manage these malignancies. Intraoral brachytherapy requires collaboration between the radiation oncologist and a dental professional for the fabrication of the brachytherapy delivery prosthesis. The present clinical report describes an intraoral angiosarcoma and the fabrication of an intraoral brachytherapy prosthesis to manage this malignancy.

The aim of this systematic review was to address the clinicopathologic inconsistencies noted with primary oral leiomyosarcoma in the literature by amassing the available data published into a comprehensive analysis. Eligibility criteria included publications of cases with dedicated immunohistochemical work‐up along with radiographs to evaluate location. Based on these criteria, the systematic review compiled 29 cases. Four primary location sites were identified in the reported cases: soft tissue presentation only, soft tissue with bony involvement, bony involvement only, and bony involvement with a soft tissue component. The majority of primary oral leiomyosarcoma cases reviewed showed a soft tissue predilection, which is in contrast to prior reports of jawbones being the most common site. In addition, there was an improved 5‐year survival rate for primary oral leiomyosarcoma limited to the oral cavity and gnathic bones without extension into paranasal sinuses.