PURPOSE: This study was performed to evaluate the features of pulmonary lobes and fissure in Korean and to compare with the previous results. MATERIALS AND METHODS: HRCT scans of 82 healthy Korean adults, performed with scan interval of 1.5/2.0 cm, were reviewed. RESULTS: Located mostly on inner aspect, incidences of incomplete oblique and horizontal fissure were 60% (Rt 48%, Lt 39%) and 51% respectively, lower than 70--80% and 60--75% of western studies. Superolateral oblique fissure, inferior accessory fissure, left horizontal fissure and other accessory fissure were shown in 1%, 13%, 7%, and 8% respectively. Lower lobe upper part faced laterally (Rt 91%, Lt 82%) while lower part faced medially (Rt 61%, Lt 79%). Right middle lobe ws highest posteromedially (49%) and was convex (97%). CONCLUSION: Features of pulmonary lobes and fissure in Korean were similar to the results of previous reports but with lower incidence of variation.
Adult ; Humans ; Incidence

PURPOSE: Diffuse panbronchiolitis(DPB) is a chronic inflammatory airway disease of unknown causes mainly affecting the respiratory bronchioles and the more proximal bronchi. Findings on chest radiographs and high-resolution CT(HRCT) are well known and Akira classified HRCT findings of DPB into four types. Purpose of this study is to evaluate the relationship between findings of HRCT and PFT. METHODS AND MATERIALS: We retrospectively analyzed the chest radiographs and HRCT images of eleven patients with DPB and compared CT classification with pulmonary function test. RESULTS: Chest radiographs usually showed small nodular opacities throughout the both middle and lower lungs. The HRCT findings of DPB were centrilobularly distributed small nodular densities, branching linear densities contiguous with small round densities, dilated and thickened peripheral and central airways including bronchioles. More than one CT type by Akira's classification, usually two or three types, were found in nine patients. There was good correlation between CT types and FEV1%(p<0.05), CT types and FEV1/FVC (p<0.05) respectively. CONCLUSION: HRCT seems to be more useful for diagnosis and disease progression of DPB as compared with the chest radiographs or clinical stage such as pulmonary function test.
Bronchi ; Bronchioles ; Classification ; Diagnosis ; Disease Progression ; Humans ; Lung ; Radiography, Thoracic ; Respiratory Function Tests* ; Retrospective Studies

PURPOSE: Computed tomographic(CT), ultrasonographic(US) findings of solid and papillary epithelial neoplasm of the pancreas were correlated with pathologic findings for the better understanding of this disease entity. METHODS AND MATERIALS: A retrospective review of CT and US of 14 cases of solid and papillary epithelial neoplasm of the pancreas was carried out in terms of the margin, internal architecture, caicification and septation, and this was correlated with gross pathologic findings. RESULTS: CT and US findings were well defined round masses consisting of both solid and cystic components. Five cases were cystic, four cases were solid and five cases were mixed. Cystic portion of the tumor represented variable degree of hemorrhagic necrosis. Six cases contained foci of calcification, which were linear, marginal and amorphous. Marginal calcification interfered US examination of the mass in three cases. Internal septurn was demonstrated in four cases on CT, one case on US and three cases on gross specimen. CONCLUSIONS: Our results indicate that calcification and internal septurn were considered as a part of radiologic findings in solid and papillary epithelial neoplasm of the pancreas.
Necrosis ; Neoplasms, Glandular and Epithelial* ; Pancreas* ; Retrospective Studies

No abstract available.
Adult* ; Diaphragm* ; Humans

This study was designed to clarify morphological changes in the renal corpuscles of the experimental rabbit kidney after unilateral ureteral obstruction and release of Unilateral ureteral obstruction through a light and electro microscopy. It was further aimed at obtaining data, esp. of electron microscopy, concerning the morphological repair after relieving ureteral obstruction. A total of 25 white rabbits, weighing 2.5kg, were used. 25 rabbits were divided into three groups-normal control, unilateral ureteral obstruction, release of unilateral obstruction. The normal! control group consisted of 5 rabbits. The remaining 20 rabbits were completely ligated in the left ureter with silk threads. Ten obstructed kidneys were studied by light and electron microscopy, five of them two weeks after obstruction, and the remaining five four weeks after obstruction. A total of ten postobstructed kidneys, five of which were reoperated by Mackinnon method for the relief of ureteral obstruction two weeks after obstruction and the remaining five four weeks after obstruction. They were studied for light and electron microscopy 15 days after relieving ureteral obstruction. Specimens of renal cortex from experimental animals were fixed in 10% neutral formalin or Bouin's solution, embedded in paraffin wax, sectioned at a thickness of 5 um, and stained with hematoxylin-eosin, periodic acid-schiff reaction or Masson's trichome for light microscopy. For electron microscopy, the tissues were fixed in a mixture of 2% paraformaldehyde and 2.5ao glutaraldehyde (phosphate buffer, pH 7.2) prior to fixation in 1% osmium tetroxide (phosphate buffer, pH 7.2) and then embedded in Epon 812. The sections were cut with LKB- III ultramicrotome and contrasted with uranyl acetate and lead citrate and examined with electron microscopy JEM 100B. The results of this study were as follows: 1. The abnormal morphology of the glomerulus in kidneys obstructed for four weeks showed: Slight glomerular congestion, capillary dilatation, no changes in endothelium, podocyte and microstructures. 2. Deformity of Bowman's capsular epithelium such as irregular basal invaginations facing with the basal lamina was observed in the two week obstructed kidneys, and severe degenerative changes such as desquamated capsular epithelial cells in the Bowman's space and long basal cytoplasmic processes embedded in the basal lamina in the four week obstructed kidneys. 3. Among the postobstructed kidney, the two week obstructed kidneys were restored to near normal on the 15th day, but in the four week obstructed kidney, Bowman's capsular epithelium showed partial recovery. 4. The results indicate that glomeruli in the renal corpuscle were preserved until four week weeks after ureteral obstruction but Bowman's epithelium showed change in the 2nd week after obstruction and severe degenerative changes of Bowman's capsular epithelium were noticed in the 4th week after ureteral obstruction. The morphological changes were totally restored in the group where ureteral obstruction was relieved after two weeks, but in the group which was relieved of ureteral obstruction after four weeks the morphological repairs were prolonged until after 15 days.
Animals ; Basement Membrane ; Capillaries ; Citric Acid ; Congenital Abnormalities ; Cytoplasm ; Dilatation ; Endothelium ; Epithelial Cells ; Epithelium ; Estrogens, Conjugated (USP) ; Formaldehyde ; Glutaral ; Hydrogen-Ion Concentration ; Kidney ; Microscopy ; Microscopy, Electron ; Osmium Tetroxide ; Paraffin ; Periodic Acid-Schiff Reaction ; Podocytes ; Rabbits ; Silk ; Trichomes ; Ureter* ; Ureteral Obstruction*

OBJECTIVE: The laparoscopic appendectomy was developed as an alternative procedure to be used in acute appendicitis. Some surgeons dispute the advantages of laparoscopic procedures for acute appendicitis. Specifically, there are many controversies associated with perforated appendicitis. We reviewed the results of appendectomies to assess the feasibility of a laparoscopic appendectomy in acute appendicitis that included perforated appendicitis. METHODS: Three hundred thirty-nine consecutive patients with laparoscopic appendectomies, which include 27 patients with perforated appendicitis, were analysed. This study considered the lengths of the operation and the hospital stay. Differences in complications between non-perforated and perforated appendicitis were also evaluated. RESULTS: A total of 388 patients underwent appendectomies, 339 patients with laparoscopy and 49 patients with conventional open appendectomies, from April 1994 to June 1996. The mean duration of laparoscopic appendectomies was 48.9 minutes. This was slightly longer than that of open appendec tomies (44.9 minutes) in the same hospital. The duration of hospital stay was on the average of 4.9 days. Six patients (1.8%) were converted to conventional surgery because of difficult mobilization in 4 patients and uncontrollable bleeding in the remaining two. The surgeries on patients who were converted to conventional surgery were performed by rotating residents without staff supervision. Minor complications developed in eight patients (2.4%). In comparing the results between non-perforated and perforated appendicitis, durations of operation (47.3 vs. 78.3 minutes) and the hospital stay (4.6 vs. 8.6 days) were longer in perforated appendicitis. However, the complication rate (2.6 vs. 0%) was unexpectedly found to be lower in perforated appendicitis. CONCLUSIONS: The laparoscopic appendectomy is a safe, feasible procedure for acute appendicitis. It is an excellent procedure for perforated appendicitis and has minor complications compared to an open appendectomy with its large incision that is followed by a high rate of wound infection and/or post operative adhesion. There aree various reports on prospective randomized studies evaluating the benefits of a laparoscopic appendectomy compared to a conventional open appendectomy. The reports by laparo scopic surgeons in various centers are different with regard to operative time, postoperative recovery, morbidity, and postoperative complications. For complicated appendicitis, most surgeons are not in agree ment with the laparoscopic approach. We obtained excellent results with laparoscopic appendectomies in perforated appendicitis which included periappendiceal abscesses.
Abscess ; Appendectomy* ; Appendicitis ; Dissent and Disputes ; Hemorrhage ; Humans ; Laparoscopy ; Length of Stay ; Operative Time ; Organization and Administration ; Postoperative Complications ; Prospective Studies ; Wound Infection

No abstract available.
Candidiasis, Cutaneous*

PURPOSE: The purpose of this study was to determine the role of CT and MR imagings in the diagnosis aortic dissection and differentiation between the true and false lumen. MATERIALS AND METHODS: We retrospectively studied forty patients with aortic dissection(AD) diagnosed imagings or surgery. Of the forty patients, 19 were examined with only CT, 14 with CT and MR, and 7 with MI~: Our points of view were(1) the classification of AD according to configuration of intimal flap by cross-sectional imaging, (2) differentiation between the true and false lumens, (3) the course of the false lumen, and (4)! detectability of the origin of major branch vessels of the abdominal aorta. RESULTS: The classification by corss-sectional imaging were crescentic(65%), circumferential(15%), flat(12%), and irregular(8%) type, in which false negative diagnosis was made in 1 case of crescentic and circumferential type, respectively. In 2 case of flat type and 1 case of irregular type, the differentiation between the true and false lumen was impossible with CT. The course of the false lumen in descending thoracic aorta revealed countrclock wise rotation(66%), clockwise rotation(5%) or fixed(29%) apperance. MR imaging was superior to CT in the detection of the origin of major branch vessels of the abdominal aorta. The determination of the origin of major branches of abdominal aorta arising from the true and false lumen were impossible in 2 cases in which only CT was done. CONCLUSION: Diagnosis of crescentic and circumferential types of AD with narrow and thrombosed false lumen was problematic in both CT and MR with no difference of diagnostic accuracy between the two modalities. The differentiation between the true and false lumen was difficult in flat and irregular types with only CT. Therefore, when surgical treatment is considered as in type B aortic dissection, MR imaging is recommended in order to determine the origin of major branch vessels.
Aorta, Abdominal ; Aorta, Thoracic ; Classification ; Diagnosis* ; Humans ; Magnetic Resonance Imaging ; Retrospective Studies

A case report of a 60 year-old man with lichen aureus of leg is presented. Clinically the solitary golden to purple colored patch consists of lichenoid papules, plsque, and mild petechiae around the lesion, and the histology reveals a dense and bandlike infiltrate hugging thepidermis. It consists of lymphocytes, histiocytes, eosinophils, and many extravasated erythrocytes and hemosiderin in dermis, but a few red cells and increased melanin pigment can also be seen in the epidermis. The eruption is mildly itchy and has been present 6 months.
Dermis ; Eosinophils ; Epidermis ; Erythrocytes ; Hemosiderin ; Histiocytes ; Humans ; Leg ; Lichens* ; Lymphocytes ; Melanins ; Middle Aged ; Purpura

No abstract available.
Animals ; Lymphocyte Subsets* ; Lymphocytes* ; Rats*