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To better understand the clinical features of mass lesions of the tongue, we retrospectively evaluated frequency, recurrence rate, and complications in 296 patients who had undergone surgery for such lesions. The diagnoses were fibroma (43.6%), mucous cyst (14.2%), papilloma (11.8%), hemangioma (7.8%), granuloma (6.4%), lipoma (1.4%), schwannoma (1.0%), ectopic tonsil (0.7%), and other (13.2%). Recurrence was noted in two patients (0.7%). Twenty-two patients (7.4%) developed surgical complications, including lingual nerve paralysis (6.4%), glossodynia (0.6%), and postoperative infection (0.3%). Lingual nerve paralysis was observed in the ventral portion (42.1%) of the tongue, apex (36.8%), lateral border (10.5%), and dorsum (10.5%). When all sites were considered together, there was no significant difference in the number of patients presenting with lingual nerve paralysis (P = 0.075). However, there were significant differences in lingual nerve paralysis at the lateral border (P0.05), apex (P0.05), and dorsum (P0.001) but not at the ventral portion (P0.05) in the size of the patients with versus without it which suggests that the risk of lingual nerve paralysis is higher at the ventral tongue, regardless of tumor size. These results shed light on the clinical features of mass lesions of the tongue.

Ganglion cysts frequently occur on the dorsal side of the carpal joints, but rarely involve the temporomandibular joint. We encountered a 64-year-old woman with a chief complaint of swelling in the right cheek. Lipoma was observed in the right cheek on magnetic resonance imaging, along with a cystic lesion in the left temporomandibular joint. The cyst in the left temporomandibular joint was extracted under general anesthesia. Histological diagnosis was ganglion cyst. We report our experience with a case of ganglion cysts occurring on the temporomandibular joint with reference to the literature.

To clarify whether intraoral ultrasonography (I-US) is effective for predicting metastasis of tongue cancer to the cervical lymph nodes.Participants comprised 29 patients with tongue carcinoma classified as T1-T4 using the TNM staging system. All patients underwent I-US preoperatively. Postoperatively, resected specimens were evaluated histopathologically.I-US found that cases with invasive depth ≥3 mm had higher potential for cervical lymph node metastasis than those with invasive depth3 mm (P.05). No other significant relationships were identified between observations on I-US and cervical lymph node metastasis. Cases with histopathologic blood vessel infiltration or lymph duct infiltration had a significant difference in risk of cervical lymph node metastasis.I-US is useful for preoperatively assessing the invasive depth of tongue carcinoma. Furthermore, observations from I-US and invasive depth of the tumor allowed presumptive diagnosis with regard to cervical lymph node metastasis.

A 76-year-old man undergoing haemodialysis for chronic renal failure presented with swelling in the right lower gingiva. Biopsy of the oral mass revealed clear cell carcinoma, and whole body computed tomography and magnetic resonance imaging revealed a mass in the left kidney. The patient was treated with local radiotherapy and immunotherapy and remains alive with cancer at the time of writing.

Adenomatoid odontogenic tumors are uncommon odontogenic lesions of which biological features have not been fully understood. We report a case of adenomatoid odontogenic tumor arising in a pregnant woman. The patient was a 20-year-old Japanese female complained of a swelling in the right maxillary gingiva and the swelling rapidly enlarged in size after pregnancy. We investigated the lesion immunohistochemically to find out biological behavior. Bcl-2 protein was strongly positive, and growth activity determined by MIB-1 was extremely high. Immunoreactivity for estrogen receptor was not detected. These results suggest that this adenomatoid odontogenic tumor showed rapid growth due to high proliferative activity and also inhibition of apoptotic cell loss but not dependent on estrogen receptor in our case.

A case showing reinforcement of the action of warfarin and potassium in a patient administered S-1 is reported.The patient was a 71-year-old man with left upper gingival cancer.He had ventricular tachycardia (VT), hypertrophic cardiomyopathy, and a cerebellar infarction.He underwent a pacemaker implantation, and was administered warfarin.After the operation, in mid-March 2010, he was administered with S-1 and warfarin. However, the international normalized ratio of prothrombin time (PT-INR) increased to an extremely high level of 5.82, and S-1 and warfarin were stopped. They were re-administered at the end of April, and the PT-INR stabilized to approximately 2.

A 77-year-old man presented with a painless swelling in the right side of the buccal mucosa. A tumor of the buccal mucosa was suspected on the basis of clinical and radiological findings. However, histopathogical examination of a biopsy specimen showed a sialolith accompanied by adhesion of Actinomyces, suggesting that the lesion was caused by minor salivary gland sialolithiasis and actinomycosis. As this condition has not been reported previously, the present case must be extremely rare.

Erratum to “Relationship between appearance of tongue carcinoma on intraoral ultrasonography and histopathologic findings” [Oral Surg Oral Med Oral Pathol Oral Radiol 2014, vol 117, pp 634-639] Yasuhisa Shinozaki, DDS, Yoshinori Jinbu, DDS, PhD, Hiroto Ito, DDS, PhD, Tadahide Noguchi, DDS, PhD, Mikio Kusama, DDS, PhD, Naoyuki Matsumoto, DDS, PhD, Kazuo Komiyama, DDS, PhD, and Nobuyuki Taniguchi, MD, PhD