No abstract available.
Animals ; DNA* ; LLC-PK1 Cells* ; Swine

No abstract available.
Amenorrhea* ; Female

The thickness of the glomerular basement membrane may vary not only in glomerular disease, but also in normal persons according to age and sex. But there has been no data on the normal thickness of the basement membrane in Korea. This study was designed to determine the glomerular basement membrane thickness as a reference value according to age and sex, in 50 cases of minimal change disease obtained from patients aged 2~67 years. Measurement of glomerular basement membrane was made on electron micrograph using an image analyzer. The thickness of each case was estimated by the arithmetic and harmonic mean methods. The mean thickness of the glomerular basement membrane was 291.9 47.9 nm by harmonic mean method and 284.2 43.7 nm by arithmetic mean method. And the harmonic mean thickness of the glomerular basement membrane according to age was 249.1 32.5 nm (1~5 years), 256.6 45.3 nm (6~10 years), 279.2 57.9 nm (11~15 years), 303.2 43.8 nm (16~20 years), 335.3 37.5 nm (21~30 years), and 291.1 22.5 nm (over 30 years), respectively. There was a trend that the thickness of glomerular basement membranes increased with the age till 30 years of age. There was no significant sex-related difference. In conclusion, the mean glomerular basement membrane thickness is comparable to the data from western people and shows a trend of increasing thickness according to the age.
Basement Membrane ; Glomerular Basement Membrane* ; Humans ; Kidney ; Korea ; Nephrosis, Lipoid* ; Reference Values

A 58-year-old female with an episode of gross hematuria two months before and fever and chill for the past three days presented oliguric acute renal failure. She has taken NSAID intermittently for 18 years due to rheumatoid arthritis, and herb medicine for one week two months ago when gross hematuria developed. Physical examination revealed mild tenderness on costovertebral angles. Her blood pressure was 170/100 mmHg, the urinalysis showed >300 mg protein with many RBCs and 10-20 WBCs and the serum creatinine was 5.8 mg/dl. A renal biopsy performed on the 4th hospital day showed that it was overwhelmed by severe tubular lesions which reveal intratubular obstruction by massive erythrocyte casts and tubular necrosis. The glomeruli showed focal minimal crescents with many red blood cells entrapped in the crescents and in the capillaries. Immune deposits were not present. A renal failure resolved spontaneously and the patient was discharged three weeks later with creatinine of 2.4 mg/dl. In this patient, acute renal failure was considered to be due to a tubular lesion related to the glomerular bleeding from focal glomerulonephritis revealing minimal crescents.
Acute Kidney Injury* ; Arthritis, Rheumatoid ; Biopsy ; Blood Pressure ; Capillaries ; Creatinine ; Erythrocytes ; Female ; Fever ; Glomerulonephritis* ; Hematuria* ; Hemorrhage ; Humans ; Middle Aged ; Necrosis ; Physical Examination ; Renal Insufficiency ; Urinalysis

PURPOSE: The purposes of this article are to identify CT findings distinguishing nasal polyps, that are the most common cause of the nasal polypiod lesions, from other nasal cavity masses and to identify differential points between benign and malignant masses of nasal cavity. MATERIALS AND METHODS: We classified 567 cases of pathologically proved nasal cavity masses into 4 different groups on CT according to the sites of origin and surrounding bone changes. RESULT: The nasal polyps were the most common cause of nasal cavity masses(515/567). Group I had a high diagnostic specificity for the nasal polyps (513/515, 99.6%) although inverted papilloma (8/522) and malignant melanoma(1/522) showed similar CT appearances. The representitive nasal mass of Group Ila was the inverted papilloma (15/24, 66.5% of the inverted papilloma). Group III pattern was seen in 3 cases of benign minor salivary gland tumor and 2 cases of pyogenic granuloma. Group IV suggested malignancy and thus was mostly observed in malignant tumors except I case of inverted papilloma and 1 case of granulomatous necrosis. CONCLUSION: The differential diagnosis between nasal polyps and the other nasal cavity masses is possible by characteristic bone changes and their sites of origin revealed on CT. In addition, it is possible to differentiate malignant masses from benign in most cases.
Diagnosis, Differential* ; Granuloma, Pyogenic ; Nasal Cavity* ; Nasal Polyps* ; Necrosis ; Papilloma, Inverted ; Salivary Glands, Minor ; Sensitivity and Specificity

Status of margins and the size of the lesion are independent prognostic factors of ductal carcinoma in situ (DCIS). Histologic grading of DCIS and expression of biologic marker also appear to act as prognostic factors. However, DNA ploidy analysis using flow cytometry in the DCIS and atypical ductal hyperplasia (ADH) has been rarely reported, and the biologic behavior of ADH is unknown. We performed immunohistochemical staining and DNA ploidy analysis using flow cytometry on 45 cases of pure DCIS without microinvasion and 34 cases of ADH to compare the expression of biologic markers and DNA ploidy patterns according to the histologic grade of DCIS, to evaluate the usefulness of the Van Nuys classification, and to investigate the biologic behavior of ADH and low grade DCIS. A total of 41.9% of DCIS and 32.1% of ADH were detected mammographically in asymptomatic patients. The most common subtype of the high grade DCIS was comedo type (56.3%), while the low and intermediate grade DCIS were cribriform type. Expression of ER, c-erbB-2 and Ki-67 proliferative index (PI) was significantly associated with nuclear grade and histologic grade of DCIS. Expression of c-erbB-2 was also significantly correlated with presence of necrosis. In low grade DCIS, Ki-67 PI was significantly higher than ADH. A total of 63.6% of DCIS and 70% of ADH were diploidy and 15.9% of DCIS was aneuploidy. There was no aneuploidy in ADH. No significant association was noted between DNA ploidy and histologic grade or nuclear grade. However, in high grade DCIS, the frequency of aneuploidy was high. In conclusion, histologic grading of DCIS employing nuclear grade and necrosis is a useful tool accounting for biologic behavior. High grade DCIS and comedo DCIS impart aggressive biologic behavior and suggest a higher possibility of local recurrence or progression to invasive carcinoma. In the differential diagnosis of ADH and low grade DCIS, the use of Ki-67 PI and DNA ploidy analysis by flow cytometry will be helpful for accurate diagnosis and prediction of biologic behavior.
Aneuploidy ; Biomarkers* ; Breast* ; Carcinoma, Ductal* ; Carcinoma, Intraductal, Noninfiltrating* ; Classification ; Diagnosis ; Diagnosis, Differential ; Diploidy ; DNA* ; Flow Cytometry ; Humans ; Hyperplasia* ; Immunohistochemistry ; Necrosis ; Ploidies* ; Recurrence

Status of margins and the size of the lesion are independent prognostic factors of ductal carcinoma in situ (DCIS). Histologic grading of DCIS and expression of biologic marker also appear to act as prognostic factors. However, DNA ploidy analysis using flow cytometry in the DCIS and atypical ductal hyperplasia (ADH) has been rarely reported, and the biologic behavior of ADH is unknown. We performed immunohistochemical staining and DNA ploidy analysis using flow cytometry on 45 cases of pure DCIS without microinvasion and 34 cases of ADH to compare the expression of biologic markers and DNA ploidy patterns according to the histologic grade of DCIS, to evaluate the usefulness of the Van Nuys classification, and to investigate the biologic behavior of ADH and low grade DCIS. A total of 41.9% of DCIS and 32.1% of ADH were detected mammographically in asymptomatic patients. The most common subtype of the high grade DCIS was comedo type (56.3%), while the low and intermediate grade DCIS were cribriform type. Expression of ER, c-erbB-2 and Ki-67 proliferative index (PI) was significantly associated with nuclear grade and histologic grade of DCIS. Expression of c-erbB-2 was also significantly correlated with presence of necrosis. In low grade DCIS, Ki-67 PI was significantly higher than ADH. A total of 63.6% of DCIS and 70% of ADH were diploidy and 15.9% of DCIS was aneuploidy. There was no aneuploidy in ADH. No significant association was noted between DNA ploidy and histologic grade or nuclear grade. However, in high grade DCIS, the frequency of aneuploidy was high. In conclusion, histologic grading of DCIS employing nuclear grade and necrosis is a useful tool accounting for biologic behavior. High grade DCIS and comedo DCIS impart aggressive biologic behavior and suggest a higher possibility of local recurrence or progression to invasive carcinoma. In the differential diagnosis of ADH and low grade DCIS, the use of Ki-67 PI and DNA ploidy analysis by flow cytometry will be helpful for accurate diagnosis and prediction of biologic behavior.
Aneuploidy ; Biomarkers* ; Breast* ; Carcinoma, Ductal* ; Carcinoma, Intraductal, Noninfiltrating* ; Classification ; Diagnosis ; Diagnosis, Differential ; Diploidy ; DNA* ; Flow Cytometry ; Humans ; Hyperplasia* ; Immunohistochemistry ; Necrosis ; Ploidies* ; Recurrence

Pulmonary carcinosarcoma(Sarcomatoid carcinoma of the lung) is a rare pulmonary malignancy, which is defined as having an admixtture of both carcinomatous and sarcomatous components. Pulmonary carcinosarcoma occurs most frequentlly in males between 50 and 80 years of age. It predominantly affects the upper lobe and/or the principal bronchi, and is associated with a history of smoking. Here, we report a case of pulmonary carcinosarcoma with a left lobe atelectasis due to an endobronchial mass in a 56-year-old male. After a left pneumonectomy, the pathologic stage was IIb (T3N0M0). Four months later, an abdominal mass was observed and exploratory laparotomy revealed metastases of the pulmonary carcinosarcoma to the pelvic cavity.
Bronchi ; Carcinosarcoma* ; Humans ; Laparotomy ; Male ; Middle Aged ; Neoplasm Metastasis ; Pneumonectomy* ; Pulmonary Atelectasis ; Smoke ; Smoking

No abstract available.
Adult* ; Humans ; Molecular Epidemiology* ; Oxalobacter formigenes* ; Seoul*

PURPOSE: In order to classify the involving patterns of maxillary sinus aspergillosis on CT that will be an important guidance for functional endoscopic sinus surgery(FESS) and to evaluate CT findings of each pattern. MATERIALS AND METHODS: We reviewed CT findings of 37 cases of maxillary sinus aspergillosis which were confirmed pathologically. These were classified into three patterns according to the location:the maxillary pattern(I), the infundibular pattern(11), and combined pattern(Ill). All cases were correlated with FESS findings. We also evaluated CT density, presence of contrast enahncement and calcifications, and surrounding bony changes of each pattern. RESULT: The combined pattern was most commonly seen in 24 of 37 cases(64.9%). The maxillary pattern was identified in 8(21.6%), with 5(13.5%)cases demonstrating the infundibular patttern. These patterns were consistent with FESS findings. Calcifications were seen in 28 cases(75.7%). 31 cases(83.8%) revealed hypodensity and 16cases among them showed peripheral enhancement. Central high density with peripheral low density rim was shown in 25%(2/8) of the maxillary pattern and 12.5%(3/24) of combined patttern. Surrounding bony changes were noted mainly in infundibular pattern and combined pattern. Erosion of uncinate process showed all cases of both patterns. Erosion or elevation of ethmomaxillary plate was seen in 3 of 5 cases of infundibular pattern and all cases of the combined pattern. CONCLUSION: CT fidnings of maxillary sinus aspergillosis can be classified into 3 patterns according to their distribution. These classification could be helpful for planning FESS approach. Calcifications are the most characteristic findings of maxillary sinus aspergllosis whereas CT density or enhancement pattern do not contribute to diagnosis.
Aspergillosis* ; Classification ; Diagnosis ; Maxillary Sinus*