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Oral cavity metastases mostly originate from the breasts, lungs, or kidneys. Transitional cell carcinoma (TCC), the most frequent malignant tumor of the urinary bladder, rarely metastasizes to the jaws. To the best of our knowledge, only 8 cases of bladder carcinoma have been reported in the English literature to metastasize to the jawbones. A new case of mandibular metastasis of urinary bladder TCC with extension to the gingiva is presented in a 64-year-old white man. The patient was referred for a periodontal infection of the upper right first molar. The clinical examination also showed a gingival swelling located in the lower left premolar region with a hypoasthesia of the left side of the lower lip. The gingival mass was biopsied, and the microscopy showed a mandibular metastatic TCC of the urinary bladder extending to the gingiva. Periodontists should be aware that, although gingival metastases are rare, when they occur they may mimic other local benign pathological conditions.

OBJECTIVE: Oral intravascular papillary endothelial hyperplasia (IPEH) is an uncommon, reactive vascular lesion with no specific clinical featureS. Microscopically two subtypes have been described: a pure and a mixed form. The importance of IPEH is in its resemblance to angiosarcoma. The aim of this study was to evaluate both the prevalence of IPEH in a consecutive series of oral vascular malformations and the clinico‐pathological features. MATERIALS AND METHODS: Histological sections of 103 consecutive cases filed as vascular malformations were reviewed for histopathological criteria of IPEH.RESULTS AND CONCLUSION: We found six cases of oral IPEH, of which three were diagnosed previously. Five of these cases were in males, and the mean age was 58 yearS. It was usually described as a blue or reddish nodule. The lower lip mucosa was the most common site followed by the tongue and the upper lip. Histologically, thrombi were always present and five out of the six lesions appeared in a mixed form, while only one was in a pure form. Three cases were diagnosed at an early stage and in the other three, the lesions were well‐established. In this series, IPEH associated with vascular malformation was more common than reported in previous studieS. Lesions at early stages, especially in the mixed form, may be unnoticed.

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