- Clinical Efficacy of Manual Liquid-Based Cervicovaginal CytologyPreparation: Comparative Study with Conventional Papanicolaou Test.
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Jong Myoung Park, Jong Gi Lee, In Soo Suh
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Korean J Cytopathol. 2005;16(1):10-17.
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- This study was performed to compare manual liquid-based preparation with conventional Papanicolaou tests in view of the cytologic diagnoses and specimen adequacy. The specimens of 5,979 women from 33 local clinics and 1 general hospital were prepared by both manual liquid-based preparation and conventional Papanicolaou test. The cytologic diagnoses and specimen adequacy were evaluated in Department of Pathology in Kyoungpook National University School of Medicine. A conventional Papanicolaou test was always prepared first, after that residual material on the sampling device was rinsed into a liquid preservative, and then thin-layer slides were prepared using manual method of liquid-based cervicovaginal cytology. Conventional and liquid-based slides were read independently, and cytologic diagnoses and specimen adequacy were classified using the Bethesda System.
Of the cases, 5,763(96.3%) had the same interpretation, and there was no significant diagnostic difference in 5,853(97.8%) cases. When evaluating cases with more than one diagnostic class difference, the manual liquid-based preparation demonstrated a statistically significant overall improvement(2.1%) in the detection of squamous intraepithelial lesion and invasive cancer. Using manual method of liquid- based preparation, there was 14.1% reduction in unsatisfactory slides through excellent cellular presentations. In conclusion, the manual liquid-based preparation produces standardized quality, superior sensitivity and improved adequacy as compared to the conventional method.
- Evaluation of the Manual Method of Liquid-Based Uterine Cervicovaginal Cytology - By The Manual Method Based on SurePathTM Methodology.
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Jong Myoung Park, Jin Wook Jang, So Yeo Lim, Jong Gi Lee, In Soo Suh
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Korean J Cytopathol. 2004;15(2):86-91.
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- Liquid-Based Uterine Cervicovaginal Cytology is known to be a sensitive and effective screening method for cervical neoplasm. MonoPrepTM, ThinPrepTM, and SurePathTM methods have been recently used as Liquid- Based Uterine Cervicovaginal Cytology techniques, and the SurePathTM method has been used in Sung-Yoon Reference Laboratory since 2003. The goal of Liquid-Based Uterine Cervicovaginal Cytology is to separate cervical epithelial cells from non-target cells, red blood cells and neutrophils. This report describes a study which evaluated cellularity, stainability, and cellular changes of epithelial cells in samples processed using a manual technique as compared to samples processed using SurePathTM automated method. The samples processed by means of a manual technique contained a cellularity of epithelial cells similar to that of the samples processed using the SurePathTM automated method. In addition, we compared variable density gradient reagents, including dextran, dextrose, and sucrose, to SurePathTM gradient media in order to evaluate cell fractionation and cellularity of epithelial cells. 10% dextran of gradient media shows good fractionation. The samples processed with 10% dextran demonstrated sufficient cellularity of epithelial cells and shows the fewest cellular changes. In conclusion, using a manual technique on these samples is easier to read than those results obtained using the SurePathTM automated method.
- The Effects of Localized X-ray Irradiation on the Peripheral Nerve.
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Jong Gi Lee, Chong Ryong Lee, In Soo Suh
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Korean J Pathol. 1989;23(1):122-131.
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Abstract
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- The authors studied the early morphologic changes of peripheral nerve, which is known as relatively radioresistant tissue to the X-ray irradiation, but recently clamied by several clinician through development of neuropathies after radiotherapy of the malignacy. Rabbits were received 1,000 or 2,000 cGy of X-ray on the knee joint areas. Sciatic nerves were extracted out 30 minutes, 1, 2, 4, 24 hours, and 3 and 7 days after irradiation. The morphologic changes were observed by light and electron microscopes. The results were summarized as follows: Light microscopically, only mild edema is noted. Electron microscopically, irregular separation and folding of myelin sheath with spherical body formation are noted. Above features were more prominent at later stages and aggregated nests of fragmented myelin were scattered 16 hours after irradiation. Schwann cell necrosis is noted after 24 hours.
But above degenerative changes were scarcely present 7 days after irradiation. There is no remarkable axonal changes.
The interstitial tissue revealed swelling and irregularity of surface of endothelial cells, and edema. On the basis of the results, it may be concluded that the peripheral nerve is injured by irradiation in early stages, and the main target of irradiation injury is thought to be myelin sheath and Schwann cells, which would be reversible and could be recovered promptly.
- The Formation of Giant Mitochondria in the Liver Cells Induced by Hydrazine.
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Il Hoon Kwon, Jong Gi Lee, Yoon Kyung Sohn, Tae Joong Sohn
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Korean J Pathol. 1986;20(3):288-294.
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- The authors studied the formation of giant mitochondria in liver cell. The Sprague Dawley rats were sacrificed following intervals; 5, 10, 20, 30, and 60 minutes after intraperitoneal injection of hydrazine in the amount of 200 microliter/kg. And the extracted liver tissues were examined with light and electron microscopes. The results obtained were summarized as follow; Light microscopically, there is little difference between control and experimental groups.
Electron microscopically, elongated, bizzare shaped mitochondria are appears 5 minutes after hydrazine injection. Those show attenuated portion, Y, U, or C shaped feature suggesting fusion or budding mitochondria. The number of giant mitochondria is decreased after 10 minutes group and rarely present in 60 minutes group. The results suggest in this experiment that the formation of giant mitochondria is kind of reversible change and it is different from the mitochondrial swelling of cellular injury. Intermitochondrial fusion and mitochondrial budding may be related with the formation of giant mitochondria.
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