Adenoid cystic carcinoma(ACC) is an uncommon tumor of the head and neck. It is one of the most common malignant tumor of the salivary glands. Although ACC has clear pathologic features, it can be diagnosed as a benign lesion in terms of cytological and radiologic aspects. In this paper, we report a rare case of ACCACC on tongue that is diagnosed as ACC but appears as a benign lesion in cytological and radiologic views.

Objectives: Lipoma is the most common soft tissue mesenchymal tumor which grows slowly. [1] [2] Intraoral lipomas are rare and have been reported in approximately 1 to 4% of all neoplasm in various literature. [2-5] Oral lipomas mostly develop slowly without symptoms, [6] and predominantly affect the buccal mucosa, floor of mouth, tongue and lip. [3] Material and Methods: A 71-year old male presented with asymptomatic swelling on tongue. On the clinical examination, there were various size of three swelling areas on the dorsum of tongue. Result: All lesions were surgically removed via intraoral approach under general anesthesia. They were soft and yellowish in color. All of the specimens has histologically revealed as typical lipomas. Conclusion: It is a report of tongue lipomas as a rare site, with clinical, histological and radiographic features. Also, there were several reports of a large or huge lipoma in oral cavity, however there were no report of multiple lipomas on the tongue. So, authors report the rarity of it.

This study aims at investigating 1)the perception of international students' mother tongue and Korean language, 2)whether their perception differs with the degree of Korean proficiency, and 3)whether the degree of exposure to Korean can affect Korean proficiency. Eighty nine international students participated in a questionnaire survey. The overall results on the survey showed that the international students' perception of their mother tongue was strong in general. However, interesting findings were that the participants' level of Korean proficiency was closely related to the perception of mother tongue: the participants who had a low level of Korean proficiency showed a comparatively strong perception of mother tongue. Furthermore, the perception of Korean language was weaker compared to that of their mother tongue. However, the exposure to Korean(e.g. the frequency of using Korean) playing a role in improving Korean proficiency was observed. Therefore, this study suggests that acquiring Korean can be related to the perception of mother tongue and that the international students should raise the frequency of contact with Koreans for their Korean proficiency.

The purpose of this study was to identify the composition and organization of lingual tissues underlying the histo-structural change of developing tongue in Korean native goats by light microscopy (LM). Tongues of the fetuses on days 60, 90, 120 and neonate were examined for the morphological development. In the 60-day-old fetuses, the tongue tissues were differentiated into epithelium, lamina propria and muscle layer. Primordia of filiform, conical, lentiform, fungiform and vallate papillae appeared and rudiments of taste bud were observed in the epithelia of the primordia of the gustatory papillae. The dorsal surface of the lingual epithelia showed a weak PAS positive reaction. Collagenous fibers and small blood vessels were shown in the connective tissues. In the 90-day-old fetuses, Von Ebner’s glands were moderately PAS positive while the muscle fibers and connective tissue were strongly positive for PAS. The collagenous fibers increased and came to have a more complex arrangement in the tongue. The muscle fibers were spread out at various directions and developed in striated muscle bundles. In the 120-day-old fetuses, taste buds were observed in the epithelia of the gustatory papillae, and several well-developed tissues visible such as blood vessels, collagenous fibers, muscle fiber bundles and Von Ebner’s glands. In the neonates, many taste buds were found in a transverse section of the vallate papilla. The muscle layers, Von Ebner’s glands, collagenous fibers and blood vessels were more developed than those of the 120-day old fetuses. These findings indicate that goat tongues have a variety of different shapes during prenatal development.