Atypical Lipomatous Tumor of the Tongue:Report of a Case

The term atypical lipomatous tumor (ALT) is synonymous with well-differentiated liposarcoma (WDL). This tumor occurs very rarely in the tongue. Thus, it is difficult to predict its prognosis. Although recurrence of ALT/WDL is thought to be unlikely after complete excision, long-term follow-up is necessary when considering the pathologic conditions of this tumor at other sites. Here, we report a case of an ALT of the tongue, with a review of the literature. A 68-year-old man was referred to our hospital because of a tumor on the left side of his tongue. Upon palpation, the tumor was 12mm in diameter, circumscribed, elastic and hard, well demarcated, movable, and painless. We diagnosed the lesion as a lipoma and extirpated the tumor under local anesthesia. Because the specimen was histopathologically diagnosed as an ALT, as a precaution, we excised an additional 5mm from the area surrounding the original tumor under general anesthesia. Three years after the operation, the tongue demonstrated good healing without paresthesia or dysfunction, and to date there has been no evidence of recurrence

Endoscopic resection of pleomorphic adenoma

Background : An accessory parotid gland (APG) is a common anatomical structure that occurs in 10%–56% of individuals. Pleomorphic adenomas are the most common benign tumors of the APG, and their ideal treatment is surgical excision, although there is a risk for aesthetic disorders and facial nerve damage due to the site of origin. Moreover, despite being benign, these tumors are known to recur. Therefore, it is necessary to achieve both reliable excision and avoidance of facial nerve damage. Case presentation : We report a case of a 49-year-old Japanese man with a mass in his left cheek. The lesion was diagnosed as a benign salivary gland tumor derived from the APG by computed tomography imaging, magnetic resonance imaging and fine needle aspiration cytology. We resected the tumor using modified high submandibular incision under the endoscopic-assisted field of view. Discussion and Conclusions : The tumor was less invasive and reliably resected using an endoscope. In surgical treatment, the endoscopic-assisted technique is very useful to achieve complete tumor resection and prevent relapse while avoiding serious complications due to surgical procedures

Clinicopathological studies on pm-colorectal carcinoma

During the 13 years from 1978 to 1990, 50 cases of colorectal cancer, infiltrating to the proper muscle layer, were experienced, and were evaluated on the basis of clinicopathological findings. Pm colorectal carcinoma were classified into two groups (pm1,pm2) according to the depth of invasion into the proper muscle layer. Most of the pm colorectal carcinomas were located in the rectum (64%). According to macroscopic classification, the ulcerative type occurred more often (84%) than the elevated type (16%). As the carcinoma invaded deeper into the proper muscle layer, the incidence of lymphatic vessel invasion tended to become higher. Lymphnode metastasis from the ulcerative type cancer (26.2%) was less frequent than that of the elevated type (62.5%). Lymphnode metastasis from the elevated type cancer was confined to the n2 lymphnode. On the other hand, lymphnode metastasis from the ulcerative type had invaded to the n3 lymphnode. These findings indicated that R3 operation is needed for pm colorectal cancer of both the elevated and the ulcerative type, although nerve preserving operation or selective lateral lymphnode dissection is reasonable for pm rectal cancer