Cancer of the mandibular gingiva metastasizing to the small intestine.

Head and neck cancer metastasizing to the small intestine is very rare. Here we report a case of cancer of the mandibular gingiva metastasizing to the small intestine. The patient was an 82-year-old man who had squamous cell carcinoma of the mandibular gingiva staged as T2N2bM0.

A Comparison of Large Soft Palate Defect Reconstruction Using the New "Tunnel Structure" and Traditional "Port Structure" Methods.

 For soft palate defects of more than two-thirds, we previously described the bent anterolateral thigh (ALT) method in which the pharyngeal isthmus was reconstructed as a tunnel structure. In this study, we compared the new "tunnel structure" reconstruction in our bent ALT flap method and the traditional "port structure" reconstruction.  From April 2010 to March 2015, 25 patients in Saitama Cancer Center (Saitama, Japan) underwent oropharyngeal tumor resection including soft palate resection.

[A Case of Severe Hyponatremia Caused by Renal Salt Wasting Syndrome in Oropharyngeal Cancer].

Hyponatremia is one of the electrolyte abnormalities frequently encountered in cancer therapy. Cisplatin is a well-known drug which can raise various adverse events, including hyponatremia. A male with advanced oropharyngeal cancer is presented in the present report, who was treated with radiotherapy with concurrent administration of cisplatin and who underwent a total of three episodes of severe hyponatremia in the course of therapy.

Pleomorphic adenoma presenting with conductive hearing loss in the ear canal: a case report and review of the literature.

Introduction: Pleomorphic adenoma accounts for 65 percent of all salivary gland tumors. It has been identified in several anatomical regions, but pleomorphic adenoma arising in the ear canal, first described in 1951, is extremely rare.

Case Presentation: A 40-year-old Japanese man's left ear canal was obstructed by a pleomorphic adenoma that caused mild conductive hearing loss.

Surgery for juvenile nasopharyngeal angiofibroma with lateral extension to the infratemporal fossa.

Objective: The study aimed to assess the usefulness of skull base surgery for large juvenile nasopharyngeal angiofibroma (JNA) with lateral extension to the infratemporal fossa.

Materials And Methods: Eleven cases were enrolled for this study, and the mean age was 17.7 years old (range: 8-32).

Ultrastructual morphology of juvenile psammomatoid ossifying fibroma.

We investigated the ultrastructural morphology of the hard tissue in a fibro-osseous lesion. Bone samples were obtained from a juvenile psammomatoid ossifying fibroma and were observed under a scanning electron microscope. The lesion had a spongy lamellar structure containing bony tissue.