The orchid symbiotic fungi were isolated from the roots of Korean native orchid (Cymbidium goeringii) collected and Chinese orchid (C. sinense) obtained from greenhouses. They were identified as a species of Rhizoctonia, based on the sequences of 18r rDNA, the microscopic observations of mycelia, and the symbiotic relationships with commercial orchids. The isolate collected from Chinese orchids was revealed to be a species of Ceratobasidium endophytica, and to be different from the other isolates at the thickness of the mycelia stained in the root cells of Korean native orchids. The other isolates collected from the Korean native orchids were considered to be a species of Tulsanella repens (anamorphic: Epulorhiza repens) or its related one. The physiologic or microscopic variations were oftenly observed among them, but the tendency of grouping these in the 18s rDNA sequences were observed to be consistent with those of the localities collected. The further taxonomical segregating for Korean symbiotic fungi was not made because the information concerned were limited in this moment, but was recognized as based on the sequences of 18s DNA.
Asian Continental Ancestry Group ; DNA ; DNA, Ribosomal ; Fungi* ; Humans ; Mycorrhizae ; Rhizoctonia ; Symbiosis

Hysterosalpingography and Hysteroscopy have been used for the detection of intraute-rine pathology such as polyps, submucous myomas, intrauterine adhesion and endometrial hyperplasia or cancer. Recently the ultrasound has also been utilized for the detection of uterine pathology. Therefore the purpose of this study was to evaluate the diagnostic efficacy of SonoHysterography in detection of intrauterine pathology compared with HSG and Hysteroscopy. 32 patients underwent Sono-Hysterography and Hysteroscopy for the evaluation of the uterine pathology from september 1995 to January 1996. Nine of 32 patients had infertility problem and HSG performed prior to Sono-Hysterography and Hysteroscopy. The results are as follows : 1. The patients' ages ranged from 20 to 50 years(median 37.9). 2. All 9 patients with infertility who had positive HSG findings in uterine cavity showed the intrauterine pathology in Sono-Hysterography as well as Hysteroscopy. The detail findings are as follows :septated uterus(n=2), intrauterine adhesion :IUA(n=3), endometrial polyp(n=3), and IUA combined endmetrial hyperplasia(n=1). 3. Twenty two of 23 patients with abnormal uterine bleeding showed the intrauterne pathology and one patient had negative finding in Sono-Hysterography. However, Hysteroscopy revealed positive intrauterine pathology in 22 patients who had abnormal uterine bleeding. One patients who had positive finding in Sono-Hysterograply showed negative by Hysterography. In contrast, one patient who had negative finding in Sono-Hysterography had positive uterine pathology with polyp in Hysteroscopy. The histologic pathology in all 23 patients reported endometrial polyp(n=12), placental polyp(n=2), submucous myoma(n=1), endometrial hyperplasia(n=5), endometrial cancer(n=1), normal endometrial finding(n=2). 4. Sono-Hysterography, therefore, has a sensitivity and positive predictive value of 96.6%, 93.5% respectively. Our study showed a positive Sono-Hysterography is very predictive of the intrauterine pathology. Sono-Hysterography is safe, quick and minimal invasive procedure. So it is an invaluable technique in the evaluation of uterine cavity.
Endometrial Hyperplasia ; Female ; Humans ; Hysterosalpingography ; Hysteroscopy* ; Infertility ; Myoma ; Pathology* ; Polyps ; Ultrasonography ; Uterine Hemorrhage

No abstract available.
Animals ; Microscopy, Electron* ; Muscle Fibers, Skeletal* ; Muscle, Skeletal* ; Rats*

Objective: This study aimed to retrospectively analyze the prevalence of orthodontic problems and the proportion of patients who underwent orthodontic diagnosis among children aged 6 (n = 300), 7 (n = 400), and 8 (n = 400) years who had undergone panoramic radiography. Methods: Children were divided into five groups according to their chief complaint and consultation: conservative dentistry, oral and maxillofacial surgery, orthodontics, periodontics, and prosthodontics). Chief complaints investigated included first molar eruption, lack of space for incisor eruption, frequency of eruption problems, lack of space, impaction, supernumerary teeth (SNT), missing teeth, and ectropion eruption.The number of patients whose chief complaint was not related to orthodontics but had dental problems requiring orthodontic treatment was counted. The proportion of patients with orthodontic problems who received an orthodontic diagnosis was also examined. Results: Dental trauma and SNT were the most frequent chief complaints among the children. The proportion of patients with orthodontic problems increased with age. However, the orthodontic diagnosis rates based on panoramic radiographs among children aged 6, 7, 8 years were only 1.5% (6 years) and 23% (7 and 8 years). Conclusions Accurate information should be provided to patient caregivers to correct misconceptions regarding the appropriateness of delaying orthodontic examination until permanent dentition is established.

PURPOSE: Piccolo et al. advocated the usefulness of Tc-99m-MDP breast scan in differential diagnosis of breast mass with high accuracy. But there are little or no follow-up studies about it as we know. We studied Tc-99m-MDP uptake pattern and lesions/background ratio in patients complaining palpable breast lesions to evaluate the clinical usefulness of Tc-99m-MDP scan. MATERIALS AND METHODS: Total 34 patients were studied with physical examination, mammogram and Tc-99m-MDP scan prospectively. Anteroposterior and both lateral view of breast were obtained 5 minutes after iv injection of 740 MBq Tc-99m-MDP. Breast uptake pattern of Tc-99m-MDP was analyzed by a grade system: 0=no uptake, grade 1=bilateral diffuse uptake, grade 2=asymmetric faint uptake, grade 3=focal hot uptake. 20 cases were pathologically confirmed by excision biopsy or aspiration biopsy. 14 cases were normal in physical examination and mammo-grain. RESULTS: Pathologic results showed 7 carcinomas, 6 benign solid tumors, and 7 fibrocystic changes. Grade 3 pattern of Tc-99m-MDP uptake was noted in 4/7 carcinomas, 3/6 benign solid tumors, and 1/7 fibrocystic changes. Grade 2 pattern was 2/7, 0/7, 3/7 respectively. The average L/B ratio was 1.66 in carcinomas, 1.68 in benign solid masses, 1.20 in fibrocystic diseases, 1.05 in normal patients. L/B ratio was higher in carcinoma and benign mass groups than in fibrocystic change and normal control groups(p=0.005). But there was no statistical difference between L/B ratio of malignant mass group and benign mass group. CONCLUSION: Tc-99m-MDP scan is not suitable to routine clinical use for breast mass diagnosis. It might be used in limited conditions when whole body bone scan is planned.
Biopsy ; Biopsy, Needle ; Breast Neoplasms ; Breast* ; Diagnosis ; Diagnosis, Differential ; Follow-Up Studies ; Humans ; Mammography ; Physical Examination ; Prospective Studies ; Technetium Tc 99m Medronate*

Angiomyolipoma is considered by many authors to be a hamartoma, occurring in a sporadic form or in association with tuberous sclerosis. This lesion consists of thick walled blood vessels, smooth muscle, and mature adipose tissue in varying amounts. We have experienced a case of the angiomyolipoma composed of monotypic epithelioid cells. The patient was a 69-year-old female. Clinically, there was no evidence of tuberous sclerosis. Microscopically, the tumor was composed of polygonal cells with abundant eosinophilic granular or clear cytoplasm, pleomorphic nuclei, prominent nucleoli, and multinucleated giant cells. The tumor cells showed positive reaction for HMB45, CD68, smooth muscle actin, and S-100, and negative reaction for epithelial membrane antigen, cytokeratin, vimentin, desmin, CD34, estrogen receptor, and progesterone receptor. Ultrastructual analysis showed the presence of glycogen, mitochondria, and other microorganelles in neoplastic cells. Melanosome or premelanosome was not identified.
Actins ; Adipose Tissue ; Aged ; Angiomyolipoma* ; Blood Vessels ; Cytoplasm ; Desmin ; Eosinophils ; Epithelioid Cells ; Estrogens ; Female ; Giant Cells ; Glycogen ; Hamartoma ; Humans ; Keratins ; Kidney* ; Melanosomes ; Mitochondria ; Mucin-1 ; Muscle, Smooth ; Receptors, Progesterone ; Tuberous Sclerosis ; Vimentin

Pseudoxanthoma elasticum (PXE) is a rare, inherited, multisystem disorder characterized by progressive calcification and fragmentation of elastic fibers. Typically, small, yellowish papules are located on the neck and flexural areas; however, localized acquired cutaneous PXE has been proposed as a non-heritable form of the disorder. We report a patient who had normal appearing skin on the chin with an itching sensation and had PXE-like changes by skin biopsy.
Chin ; Elastic Tissue ; Humans ; Neck ; Pruritus ; Sensation ; Skin

No abstract available.
Blood Group Incompatibility* ; Bromelains*

No abstract available.
Aortic Aneurysm, Thoracic* ; Aortic Coarctation*

Radiation sensitivity data was generated for two human cancer cell lines(KB, RPMI 2650) and human primary gingival fibroblast was tested three times using a viable cell number counting with a hemocytometer, MTT(3-[4,5-dimethylthiazol 2-yl]-2,5-dipheny tetrazolium bromide) assay, and LDH(Lactate dehydrogenase) assay. Single irradiation of 2, 4, 6, 10, 15, 20 Gy were aplied to the tumor cell lines and the primary cultured gingical fibroblast. The two fractions of 4 Gy an d 10 Gy were seperated with a 4 hour time interval. The irradiation was done with 241.5 cGy/min dose rate using 137 Cs MK cell irradiator at room temperature. The obtained results were as followed: 1. There was significantly different viable cell numbers as the amount of radiation dose on the tested cells were cell number counted with a hemocytometer, In fractions, there were more viable cells remaining, 2. Phase-contrast microscopically, radiation-induced morphologic changes were pronounced on the tumor cells, however, a lmost no differences on the gingival fibroblast. 3. There was significantly different absorbance at 2 Gy on RPMI 2650, 4 Gy on KB and GF in MTT assay. In fractions, the absorbance was significantly higher on KB. 4. THe level of extracellular LDH activity in the experimental group was significantly higher in the 2-4 Gy than the co ntrol group. 5. The total level of extracellular and intracellular LDH activity was decreased as increased amounts of radiation dose was applied.
Cell Count ; Cell Line, Tumor* ; Fibroblasts ; Humans ; Radiation Tolerance*