The aim of this study was to characterize the morphology of a polycystic kidney which was found in 100% of the transgenic mice homozygous for inv mutation and to gain insight into the pathogenesis of inherited polycystic kidney disease during the pre- and postnatal periods. The fetal and postnatal kidneys from the homozygous and heterozygous transgenic mice were examined by the light, transmission and scanning electron microscopes, image analyzer, and an immunohistochemistry utilizing the antibodies specific for each segment of the renal tubules (Tetragonolobus purpureas, Arachis hypogaea, Tamm-Horsfall protein, AE1/AE3, EMA, vimentin, Phaseolus vulgaris) was performed to determine the site of origin of renal cysts. Two developmental phases of a cystic disease were identified. The first phase, seen in fetal kidneys, was characterized by dilatation mainly of the proximal tubules and a few distal tubules. The later phase, in postnatal period, was characterized by progressive enlargement of the kidneys due to mainly cystic change of the collecting ducts, which distorted the normal architecture of both cortex and medulla and almost completely replaced the renal parenchyma. The cystic dilatation involved all segments of the nephron and the collecting duct as well as the Bowman's spaces of glomeruli. The epithelial cell hyperplasia was found as a micropolyp formation within the renal cysts and an increase in PCNA positive cells. These findings suggest that a cyst is not simply a ballooning of a renal tubule and the stretching of cells, formerly thought to be due to an altered compliance of an abnormal basement membrane, but indeed the result of increased numbers of tubular epithelial cells.
Animals ; Antibodies ; Arachis ; Basement Membrane ; Compliance ; Dilatation ; Epithelial Cells ; Hyperplasia ; Immunohistochemistry ; Kidney ; Mice ; Mice, Transgenic* ; Microscopy, Electron ; Nephrons ; Phaseolus ; Polycystic Kidney Diseases* ; Proliferating Cell Nuclear Antigen ; Uromodulin ; Vimentin

PURPOSE: The study was conducted to investigate correlations between self-management and physiological measurements of patients on hemodialysis according to their age. METHODS: The subjects were 120 patients on hemodialysis at three hospitals in S and G cities. Data were collected using a structured questionnaire and medical records. The collected data were analyzed using descriptive statistics including t-test, ANOVA, and Pearson's correlation analysis with the SPSS 23.0 program. RESULTS: The levels of compliance with self-management were highest in the middle-aged group. There was no significant difference in physiological measurements between the different age groups. CONCLUSION: The results suggest that nurses should consider characteristics of different age groups to improve the levels of self-management and physiological measurements.
Compliance ; Humans ; Medical Records ; Renal Dialysis ; Self Care

No abstract available.
Humans ; Quality of Life* ; Renal Dialysis* ; Renal Insufficiency*

Elastofibroma is a rare benign tumor-like condition manifesting as firm and spherical mass with poorly circumscribed margins of fibroelastic tissue, occuring in the subscapular region or the chest wall of elderly persons. It is not a true neoplasm but rather a reactive or degenerative process causing abnormal elastogenesis. It is unilateral in the majority of cases and the right side is affected more commonly than the left. We report a case of bilateral elastofibromas removed from both subscapular regions of a 73-year-old female farmer. She was presented with tender masses on the bilateral subscapular areas for seven years. Microscopically, it consisted of a mixture of intertwining broad eosinophilic collagen bundles and elastic fibers associated with a few fibroblasts and mature fat cells. The elastic fibers had a degenerated beaded appearance or were fragmented into serrated globules in a linear arrangement.
Adipocytes ; Aged ; Collagen ; Elastic Tissue ; Eosinophils ; Female ; Fibroblasts ; Humans ; Thoracic Wall

No abstract available.
Humans

Extraskeletal chondromas are relatively uncommon benign cartilaginous tumors of the soft tissue and well known to pose a considerable diagnostic problem because of histological variations including the immature appearance of their tumor cells. Recently, we have experienced a case of extraskeletal chondroma mimicking benign chondroblastoma. The patient was a 47-year-old woman who complained of a painful subcutaneous swelling on the radial aspect of 4th proximal interphalangeal (PIP) joint in the left hand for 6 months. Radiologic examination of the 4th finger revealed a 1cm-sized soft tissue mass. Histologically, the tumor was characterized by a lobulated mass which was composed of dense proliferation of chondroblast-like cells admixed with a few multinucleated giant cells of osteoclastic type. However, there were focal areas of typical chondroma which showed lace-like intense calcification around the differentiated chondrocytes.
Chondroblastoma ; Chondrocytes ; Chondroma* ; Female ; Fingers ; Giant Cells ; Hand ; Humans ; Joints ; Middle Aged ; Osteoclasts

PURPOSE: The purpose of this study was to evaluate the spectrum of MR characteristics of cystic acoustic neurinomas and to correlate with pathologic findings. MATERIALS AND METHODS: We retrospectively reviewed the MR findings of 12 patients with cystic acoustic neurinomas. The signal intensity and enhancement pattern of the cystic components as well as the location relative to the tumors were analyzed. RESULTS: A total of 30 cysts were found in 15 acoustic neurinomas;28 were intratumoral cysts and the remaining two were extratumoral cysts. The signal intensity of all 28 intratumoral cysts was higher than that of CSF on Tl-weighted images, and isointense to CSF on T2-weighted images, while the signal intensity of the two extratumoral cysts was same as CSF on both Tl-weighted and T2-weighted images. Rim enhancement was seen in 27 of 28 intratumoral cysts but in none of the two extratumoral cysts. CONCLUSION: We concluded that intratumoral cyst was due to tumoral necrosis, hemorrhage or degenerative change and extratumoral cyst due to secondary arachnoid cyst formation.
Acoustics* ; Arachnoid ; Hemorrhage ; Humans ; Necrosis ; Neuroma, Acoustic* ; Retrospective Studies

To analyzed the progression of white matter maturation and white matter pathology, MR imaging of the brain was obtained in 38 children with delayed development. Children with developmental delay showed a high incidence of MR abnormalities(34/38, 89.5%). Delayed pattern of myelination and gray-white matter differentiation was seen in 13 patients. Twenty-two patients had white matter patholgy, including 14 with white matter hypoplasia, seven with focal small infarction, five with periventricular leukomalacia, and three with high signal intensities on T2 weighted image. Associated structural abnormalities were also evaluated. The most common lesions in decreasing frequency were cerebral atrophy and dysgenesis of the corpus callosum, pachygyria and/or polymicrogyria, porencephalic cyst and Leigh's disease. Twenty-three of 34 children had multiple abnormalities on MRI. The MRI was useful in depicting the progression of myelination and other white matter lesions, and serial follow-up MR is recommended for patients with delayed or lack of myelination and gray-white matter differentiation.
Abnormalities, Multiple ; Atrophy ; Brain* ; Child* ; Corpus Callosum ; Follow-Up Studies ; Humans ; Incidence ; Infant, Newborn ; Infarction ; Leigh Disease ; Leukomalacia, Periventricular ; Lissencephaly ; Magnetic Resonance Imaging* ; Myelin Sheath ; Pathology ; Polymicrogyria ; White Matter*

No abstract available.
Child ; Health Promotion ; Humans ; Immunization* ; Child Health

No abstract available.