Sialadenoma papilliferum (SP) is a rare tumor that develops from salivary glands. First described by Abrams and Finck, the tumor shows a papillary form. The most frequent location of this tumor is the palate. In this case, we report a 63 year old man with a lesion located at the right retromolar of the mandible which might have caused bone resorption. Among with this case report, this paper discuss the feature of this rare tumor. The cases were searched from the pubmed website (https://www.ncbi.nlm.nih.gov/pubmed/) using the keyword ‘sialadenoma papilliferum’. Out of total 65 cases 41 patients were male and 19 patients were female. 4 patients were under the age of 20, 4 patients were between 21 and 40, 25 patients were between 41 and 60, 23 patients were between 61 and 80 and 4 patients were over 81 years old. The number of patients with the size of the lesion less than 1cm were 23, 16 patients had the size of 1cm to 2cm and 8 patients lesion were larger than 2cm. 22 lesions were located at the hard palate, 2 were at the soft palate, 6 were at the junction of hard and soft palate, 8 were at the buccal mucosa, 1 was at the upper lip mucosa, 3 were at the retromolar pad, 2 were at the tongue, 4 were at the parotid gland, 2 were at the floor of mouth, 1 was at the faucial pillar, 3 were at the bronchus, 1 was at the esophagus, 2 were at the nasopharynx, 1 was at the nasal septum, 1 was at the lung, 1was at the nasal cavity. In this case the lesion was found at an unusual location and although SP is known to be a benign tumor it may present bone resorption and have malignant characteristics.

Extranodal intraoral Hodgkin lymphoma is not common. We report the case of a 78-year-old male patient with ulcer of the mandibular oral mucosa that was not cured for about 3 weeks. In biopsy and histopathologic examination, it was found to be extranodal intraoral Hodgkin lymphoma. Early diagnosis of oral lesions led to early detection of lesions of the opposite neck lymph node in an additional PET-CT scan. We report this case and review relevant literature.