We report a case of hyalinizing trabecular adenoma of the thyroid gland with its immunohistochemical and ultrastructural features. A 53 year-old euthyroid woman presented a well defined small cold nodule on a thyroid iodine scan. Microscopically, oval and elongated tumor cells were arranged in trabeculae, clusters and a "zellballen" pattern resembling paraganglioma with scattered follicles. Nuclear features were characterized by fine nuclear grooves, acidophilic intranuclear cytoplasmic inclusions and perinucleolar halos. Abundant extracellular eosinophilic fibrohyaline matrix resembling amyloid were also noted. Immunostaining of tumor cells was positive for thyroglobulin and negative for calcitonin. In addition, tumor cells displayed an unexpected, unique cytoplasmic immunoreactivity for MIB1. Electron microscopy revealed euchromatic nuclei with grooves, intranuclear cytoplasmic inclusions, intermediate filament stuffed cytoplasms and abundant extracellular basal lamina material.
Adenoma* ; Amyloid ; Basement Membrane ; Calcitonin ; Cytoplasm ; Eosinophils ; Female ; Humans ; Hyalin* ; Inclusion Bodies ; Intermediate Filaments ; Iodine ; Microscopy, Electron ; Middle Aged ; Paraganglioma ; Thyroglobulin ; Thyroid Gland*

Cyclins are the regulatory subunits of cyclin-dependent kinase and play an important role in cell proliferation. Many tumors, such as colon, breast and gastric carcinomas are known to be involved in the deregulation or amplification of cyclins, especially cyclin E, which involves the restriction point of G1-S transition. We investigated the expression of cyclin E in benign and malignant epithelial tumors of the gallbladder and compared the results with the activity of cell proliferation by the Ki67 antigen using immunohistochemical staining. Cyclin E was expressed in the adenocarcinoma tissue in 33.3% of patients (4 out of 12 cases), whereas only one out of 8 cases of adenoma expressed cyclin E (12.5%). There was a correlation between cyclin E expression and the Ki67 labeling index. These results suggest that the high expression of cyclin E in adenocarcinoma of the gallbladder is related to a high rate of cell proliferation.
Adenocarcinoma/pathology ; Adenocarcinoma/metabolism* ; Adenoma/pathology ; Adenoma/metabolism* ; Adult ; Aged ; Cyclin E/metabolism* ; Female ; Gallbladder Neoplasms/pathology ; Gallbladder Neoplasms/metabolism* ; Human ; Immunohistochemistry ; Male ; Middle Age

Papillary endothelial hyperplasia(PEH), usually originates in extracranial soft tissue, is considered a reactive proliferation of endothlium and an unusual form of thrombus organization. However the occurance of PEH in the cranial cavity is very rare. The authors report a case of a PEH involving intracranial sella, parasella, cavernous sius, ethmoid and sphenoid sinus in an 11-year-old boy. The patient was presented with sudden right visual disturbance. Magnetic resonance image showed a well-enhanced mass in the right cavernous sinus extending into the ethmoid and sphenoid sinus. The cerebral angiography demonstrated a vigorous tumor staining supplied by both internal and external carotid arteries. The right fronto-temporal craniotomy and subtotal resection of the tumor were performed. The mass was comprised in a highly vascular red-black nodular tissue associated with a mixture of fresh and organizing thrombi. The histopathological examination revealed papillary structures lined by endothelium within vascular space with organized thrombus. While the patient was waiting for second operation in order to remove remaining small tumor in the ethmoid and sphenoid sinues, the lesion exhibited rapid regrowth and the size became to the preoperative size at three months after operation. At reoperation, gross total removal was accomplished by a combination of trans-cranial and trans-sphenoidal approaches. Postoperative radiotherapy was given.
Carotid Artery, External ; Cavernous Sinus* ; Cerebral Angiography ; Child ; Craniotomy ; Endothelium ; Humans ; Hyperplasia* ; Male ; Radiotherapy ; Reoperation ; Sphenoid Sinus* ; Thrombosis

The chordoid glioma is a recently recognized rare neoplasm of the third ventricle and hypothalamus and, as the name implies, has a chordoid appearance. Using histological, immunohistochemical and ultrastructural studies, we report a case of a 32-year-old man with a chordoid glioma in the third ventricle. Magnetic resonance T1-weighted images of the brain with homogenous contrast enhancement revealed a well circumscribed, isointense mass occupying the third ventricle. Histologically, the tumor showed cords and clusters of epithelioid cells within a mucinous background along with lymphoplasmacytic infiltrate, and appeared to be reminiscent of a chordoma or chordoid meningioma. Immunohistochemically, the tumor cells were immunoreactive for glial fibrillary acidic protein, vimentin and CD34 but negative for epithelial membrane antigen. Ultrastructural study revealed round to spindle shaped cells with abundant cytoplasmic intermediate filaments and cytoplasmic zonation.
Adult ; Brain ; Chordoma ; Cytoplasm ; Epithelioid Cells ; Glial Fibrillary Acidic Protein ; Glioma* ; Humans ; Hypothalamus ; Intermediate Filaments ; Meningioma ; Mucin-1 ; Mucins ; Third Ventricle ; Vimentin

No abstract available.
Animals ; Brain* ; Rats*

Milwaukee shoulder syndrome is a rare clinical entity that is a rapid destructive shoulder arthropathy associated with deposition of calcium hydroxyapatite crystals. It mainly affects elderly women. It is characterized by the presence of large amount of noninflammatory synovial fluid containing calcium hydroxyapatite crystals, a complete tear of the rotator cuff and progressive degenerative changes at the humeral head, leading to almost complete functional impairment. We present a case of a 65-year-old woman suffered by Milwaukee shoulder syndrome with literature view.
Aged ; Durapatite ; Female* ; Humans ; Humeral Head ; Rotator Cuff ; Shoulder* ; Synovial Fluid

No abstract available.
T-Lymphocytes*

BACKGROUND: Rifampicin (RFP) is a key component of the antituberculous short-course chemotherapy and the RFP resistance is a marker of multi-drug resistant (MDR) tuberculosis. RpoB gene encodes the beta-subunit of RNA polymerase of M. tuberculosis which is the target of RFP. And the mutations of rpoB gene have been found in about 96% of rifampicin resistant clinical isolates of M. tuberculosis. So in order to find a rapid and clinically useful diagnostic method in identifying the REP resistance, we compared the PCR-line probe method with PCR-SSCP for the detection of the rpoB gene mutation in cultured M. tuberculosis. METHODS: 45 clinical isoLates were collected from patients who visited Sung Kyun Kwan University Hospital. The REP susceptibility test was referred to the referral laboratory of the Korean Tuberculosis Institute. 33 were rifampicin resistant and 12 were rifampicin susceptible. The susceptibility results were compared with the results of the PCR-SSCF and PCR-line probe method. RESULTS: We could find rpoB mutations in 27/33(81.8%) RFP-resistant strains by PCR-line probe method, and in 23/33(69.7%) by PCR-SSCP and there was no significant difference between two methods. There was no mutation in rifampicinn susceptible strains by both methods.: Comparison of PCR-line probe and PCR-SSCP methods for detection rifampicin resistance CONCLUSION: PCR-Iine probe method would be a rapid, sensitive and specific method for the detection of rifampicin resistant Mycobacterium tuberculosis.
DNA-Directed RNA Polymerases ; Drug Resistance ; Drug Therapy ; Humans ; Mycobacterium tuberculosis* ; Mycobacterium* ; Polymorphism, Single-Stranded Conformational ; Referral and Consultation ; Rifampin* ; Tuberculosis

No abstract available.
Humans ; Oxygen* ; Pulmonary Disease, Chronic Obstructive*

The coexistence of polymyositis and primary biliary cirrhosis is rare. Both are characterized by chronic inflammation and immunological abnormalities. We report a case of 54-year-old female patient presenting with these two autoimmune diseases. She exhibited symmetrical proximal muscle weakness and elevated serum levels of muscle enzymes. Polymyositis was confirmed by electromyography and muscle biopsy. The diagnosis of primary biliary cirrhosis was based on increased serum levels of alkaline phosphatase, IgM immunoglobulin, presence of antimitochodrial antibody and characteristic liver biopy findings. This is the first case who manifest polymyositis and primary biliary cirrhosis simultaneously in Korea.
Alkaline Phosphatase ; Autoimmune Diseases ; Biopsy ; Diagnosis ; Electromyography ; Female ; Humans ; Immunoglobulin M ; Immunoglobulins ; Inflammation ; Korea ; Liver ; Liver Cirrhosis, Biliary* ; Middle Aged ; Muscle Weakness ; Polymyositis*