No abstract available.
Ameloblastoma

No abstract available.
Child* ; Gangwon-do* ; Humans

Pleomorphic adenoma is the most common salivary neoplasm mainly occurring in the major salivary glands - especially in parotid gland, which is characterized by variable histopathologic appearances and high recurrence rate with malignant transformation according to surgical situations. And this benign mixed tumor occurring in minor salivary glands is believed to shows same clinicopathologic appearances and relatively low recurrent rate compared with the case in major salivary glands. But there are few comparative studies of large series of pleomorphic adenoma occurring in minor salivary glands which includes different histopathologic appearance, clinical characteristics, treatment methods, recurrence rate, and malignant transformation. We retrospectively studied the 54 patients who were pathologically confirmed with pleomorphic adenoma occurring in minor salivary glands, and analyzed the clinico-histopathological appearance, surgical methods, recurrent cases. The results obtained are as follows. 1. The incidence of the tumor was most frequent in 4th & 5th decade, and in female. 2. Palate(90%) including hard & soft palate was the most frequent site for pleomorphic adenoma in minor salivary glands. 3. The exact duration could not be known due to asymptomatic slow growth patterns of the tumor. 4. The mean tumor size was 2.3cm. 5. 28 (52%) pleomorphic adenomas were classified as Cellular type (cell-rich), 17 (31%) specimen as Intermediate type(equal cell to stroma ratio), and 9 (17%) as Myxoid type(stroma-rich). 6. Surgically 51 cases (94%) were showed well-encapsulated tumors, but histopathologically only 34 specimen (63%) were wellencapsulated. Therefore pleomorphic adenomas in minor salivary glands also have to be excised more widely, not enucleated. And in case of suspicious malignancy or large tumor, preoperative incisional biopsy can be applied in the center of the tumor for prevention of rupture of tumor cell, and total excision with use of frozen biopsy for detection of malignancy and confirming the excision m argin, and closed follow-up according to final histopathologic results is recommended.
Adenoma, Pleomorphic* ; Biopsy ; Female ; Humans ; Incidence ; Palate, Soft ; Parotid Gland ; Recurrence ; Retrospective Studies ; Rupture ; Salivary Glands ; Salivary Glands, Minor*

Purpose: Research comparing and evaluating the properties of various dental materials is an important topic in the field of dentistry. This study aims to evaluate the fluoride release and microhardness properties of various fluoride-containing restorative materials used in dental treatments. Materials and Methods: Thirty specimens of four restorative materials were pre-pared (5 mm × 2 mm, cylindrical): alkasite-based material (Cention N, CN), Self-cure glass Ionomer (Riva self cure, RS), Resin-modified glass ionomer cement (Fuji LC II, FL) and composite resin (Filtek Z350XT, FZ). Fluoride release measurements were conducted on 25 specimens at intervals of 1, 2, 6, 13, 20, and 27 days with a fluoride electrode connected to the pH/ISE Meter (Orion Star A214, Thermo Scientific, USA) and cumulative fluoride release was calculated. Vickers microhardness measurements were performed on five specimens from each material with microhardness tester (DM2D, AFFRI, Italy). Results: As a result of measuring the amount of fluoride release over 27 days, the amount of fluoride release in CN showed a gradual increase, while the amount of fluoride release in RS, FL, and FZ gradually decreased. The cumulative fluoride release amount for 28 days was significantly higher in CN and FL than in RS (P < 0.05). FZ and RS demonstrated significantly higher microhardness compared to CN and FL (P < 0.05). FZ and RS showed similar microhardness, and FL showed the lowest microhardness. Conclusion Cention N (CN) exhibited superior fluoride release compared to Glass Ionomer Cement (RS), making it a promising option for preventing secondary caries. However, it displayed a lower microhardness than the composite resin (FZ), indicating potential limitations in terms of mechanical strength. Therefore, if an anti-caries action is required, Cention N may be considered first; however, it appears to be difficult to use in posterior permanent teeth.

Tonsillectomy, with or without adenoidectomy, remains the most frequently performed surgical procedure by otolaryngologists. Postoperative hemorrhage, which is classified as primary (<24 h) or secondary (>24 h) hemorrhage, is recognized as a rare but potentially life-threatening complication. Although most oral bleedings occuring after tonsillectomy are considered as post-tonsillectomy hemorrhages, there could also be other origins such as gastrointestinal hemorrhage. We recently experienced a case of gastrointestinal hemorrhage that was misdiagnosed as secondary post-tonsillectomy hemorrhage. We report this case with a review of the literature.
Adenoidectomy ; Gastrointestinal Hemorrhage ; Hemorrhage ; Postoperative Hemorrhage ; Stomach Ulcer ; Tonsillectomy

Leiomyoma is the most common benign neoplasm of the uterus and gastrointestinal tract, but it is rare in the oral cavity. Also, its occurrence in the tongue is very rare because there is so little smooth muscle tissue present in this region. Clinically, oral leiomyoma usually grows slowly and is generally a non-ulcerated, small (1 to 2 cm), painless, sessile, firm and superficial nodule like lesion, although several authors have reported painful lesions. The diagnosis and treatment of oral leiomyoma is possible with complete surgical excision and histological studies by special stains. Recently, we experienced a 42-year-old woman with 6 month history of protruding tongue mass. She underwent surgical excision and the final pathological result confirmed it to be vascular leiomyoma. We report this case with a review of the related literatures.
Adult ; Angiomyoma ; Coloring Agents ; Female ; Gastrointestinal Tract ; Humans ; Leiomyoma ; Mouth ; Muscle, Smooth ; Tongue ; Uterus

PURPOSE: Longitudinal pancreaticojejunostomy is a treatment option for selected patients with chronic obstructive pancreatitis that is rarely performed laparoscopically. METHODS: A 54-year-old man presented with chronic postprandial abdominal pain. A computed tomography scan revealed multiple calcified stones at the pancreatic head and tail with marked dilation of the pancreatic duct (0.8 cm in diameter). The patient underwent laparoscopic longitudinal pancreticojejunostomy. Impacted stones were removed and Roux-en-Y pancreaticojejunostomy was performed using an intracorporeal suture technique in a longitudinal side-to-side manner. RESULTS: The total operation time and estimated blood loss were 150 min and 50 ml, respectively. The patient tolerated a regular diet without postprandial abdominal pain. Postoperative recovery was uneventful and the patient was discharged on postoperative day 5 in good condition. He returned to work on postoperative day 9. CONCLUSION: Longitudinal pancreaticojejunostomy might be an effective option for relief of chronic pain in treating chronic obstructive pancreatitis.
Abdominal Pain ; Chronic Pain ; Diet ; Head ; Humans ; Middle Aged ; Minimally Invasive Surgical Procedures ; Pancreatic Ducts ; Pancreaticojejunostomy* ; Pancreatitis* ; Pancreatitis, Chronic ; Suture Techniques ; Tail

MMP-2 and MMP-9, type IV collagenases which degrade basement membrane, have been known to play important roles in invasion and metastasis of tumor cells, In addition, they seem to be involved in cell differentiation, apoptosis, angiogenesis and immunity, etc. We immunohistochemically examined epithelial and stromal expressions of MMP-2 and MMP-9 in irritation fibroma, oral leukoplakia, and oral squamous cell carcinoma (OSCC) and have some results as follows: 1. Irritation fibromas, oral leukoplakias and OSCCs mostly showed increased expression of MMP-2 and MMP-9 in the epithelium and connective tissue compared with normal mucosa. 2. There was a significant difference in the epithelial expression of MMP-2 and MMP-9 between irritation fibroma and oral leukoplakia. 3. There was a significant difference in the epithelial and stromal expression of MMP-2 and MMP-9 between irritation fibroma and OSCC. 4. There was a significant difference in the stromal expression of MMP-9 between oral leukoplakia and OSCC. We concluded that rritation fibroma, oral leukoplakia and OSCC have somewhat different characteristics of MMP-2 and MMP-9 expressions, which perhaps result from different pathogenesis.
Apoptosis ; Basement Membrane ; Carcinoma, Squamous Cell* ; Cell Differentiation ; Collagenases ; Connective Tissue ; Epithelium ; Fibroma* ; Leukoplakia, Oral* ; Mucous Membrane ; Neoplasm Metastasis

Body Regions ; Carcinoma, Squamous Cell ; Humans ; Mandible ; Mandibular Osteotomy

PURPOSE: The aim of the study was to validate abbreviated mortality in emergency department sepsis (MEDS) scoring system by comparing it with original MEDS score and to assess the prognostic value of other prognostic factor for sepsis patients including multiple organ dysfunction score (MODS), sepsis-related organ failure assessment (SOFA) score, and serum procalcitonin level. METHODS: Adult patients visiting emergency department (ED) with evidence of septic shock were enrolled to the study. MEDS score, MODS, and SOFA score were calculated based on initial clinical data. Receiver-operating characteristics (ROC) analyses were used to assess the prognostic factors for predicting mortality. Kaplan-Meier survival analyses (KMSA) were used to determine whether the prognostic factors had correlation with survival time. RESULTS: Only MODS showed significant predicting power for mortality (p=0.003, area under curve=0.625). Estimated median survival of all the patients calculated by KMSA was 11.0 (standard error 1.7) days, and predefined criteria of all prognostic factors showed significant differences in survival time. CONCLUSION: MEDS, abbreviated MEDS, MODS, and SOFA scoring systems were useful factors for predicting survival time of septic shock patients visiting ED.
Adult ; Calcitonin ; Emergencies ; Humans ; Multiple Organ Failure ; Organ Dysfunction Scores ; Prognosis ; Protein Precursors ; Sepsis ; Shock, Septic