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Mitoma T, Maki J, Ooba H, Ogawa C, Masuyama H, Tabuchi T. Association of Regular Cervical Cancer Screening with Socioeconomic, COVID-19 Infection and Vaccine Status Among Japanese Population: Cohort Observational Study. Int J Gen Med 2024; 17:541-551. [PMID: 38371520 PMCID: PMC10874123 DOI: 10.2147/ijgm.s453675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 02/07/2024] [Indexed: 02/20/2024] Open
Abstract
Purpose Among the Organisation for Economic Co-operation and Development countries, Japan has one of the lowest cervical cancer screening coverages. Cancer screening coverage has worsened due to the coronavirus disease of 2019 (COVID-19) pandemic. This study investigated the relationship between socioeconomic background, COVID-19 infection history and vaccine status, and regular cervical cancer screening (CCS) during the two years of the COVID-19 era in Japan. Patients and Methods We used data from the Japan COVID-19 and Society Internet Survey, a nationwide, Internet-based, self-report cohort observational study conducted in 2022. The outcome variable was identified by asking whether the participants had undergone CCS within the last two years. Cervical cytology was performed in Japan by brushing the external cervical os. This study used multivariate log-binomial regression models to evaluate inequalities during regular checkups for CCS. Adjusted prevalence ratios (APRs) with 95% confidence intervals (CIs) were estimated to incorporate the socioeconomic background variables. Results Of the 12,066 participants, 5597 (46.4%) had undergone regular CCS for over two years. The prevalence ratio (PR) of patients who underwent CCS was 0.70 for those in their 20s and 0.78 for those in their 60s, compared to those in their 40s. Socioeconomic inequities were found in the following groups: unemployed/student, unmarried, high school graduate or lower, and household income below 4 million Yen. Our final multivariate analysis revealed that participants who were in their 20s or 60s, had a household income below 4 million Yen, were unmarried, had no annual health check-ups, and were unvaccinated with COVID-19 were at a higher risk of not undergoing CCS. Conclusion The relationship between socioeconomic inequality and CCS hesitancy is prevalent among younger participants. The CCS coverage in Japan during the COVID-19 pandemic year (2020-2022) was not low compared with the pre-pandemic era.
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Affiliation(s)
- Tomohiro Mitoma
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Jota Maki
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hikaru Ooba
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Chikako Ogawa
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hisashi Masuyama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takahiro Tabuchi
- Department of Cancer Control Center, Osaka International Cancer Institute, Osaka, Japan
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Ooba H, Maki J, Tabuchi T, Masuyama H. Partner relationships, hopelessness, and health status strongly predict maternal well-being: an approach using light gradient boosting machine. Sci Rep 2023; 13:17032. [PMID: 37813926 PMCID: PMC10562477 DOI: 10.1038/s41598-023-44410-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 10/07/2023] [Indexed: 10/11/2023] Open
Abstract
No recent study has explicitly focused on predicting the well-being of pregnant women. This study used data from an extensive online survey in Japan to examine the predictors of the subjective well-being of pregnant women. We developed and validated a light Gradient Boosting Machine (lightGBM) model using data from 400 pregnant women in 2020 to identify three factors that predict subjective well-being. The results confirmed that the model could predict subjective well-being in pregnant women with 84% accuracy. New variables that contributed significantly to this prediction were "partner help", "hopelessness," and "health status". A new lightGBM model was built with these three factors, trained and validated using data from 400 pregnant women in 2020, and predicted using data from 1791 pregnant women in 2021, with an accuracy of 88%. These factors were also significant risk factors for subjective well-being in the regression analysis adjusted for maternal age, region, parity, education level, and the presence of mental illness. Mediation analysis, with "hopelessness" as the mediator, showed that both "partner help" and "health status" directly and indirectly affected the outcome.
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Affiliation(s)
- Hikaru Ooba
- Department of Obstetrics and Gynecology, Okayama University Hospital, Okayama, Okayama, Japan
| | - Jota Maki
- Department of Obstetrics and Gynecology, Okayama University Hospital, Okayama, Okayama, Japan.
| | - Takahiro Tabuchi
- Cancer Control Center, Osaka International Cancer Institute, Osaka, Osaka, Japan
| | - Hisashi Masuyama
- Department of Obstetrics and Gynecology, Okayama University Hospital, Okayama, Okayama, Japan
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Mishima S, Mitsui T, Tani K, Ooba H, Mitoma T, Ohira A, Maki J, Kirino S, Eto E, Hayata K, Masuyama H. Endothelin-1 production via placental (pro)renin receptor in a mouse model of preeclampsia. Placenta 2023; 138:44-50. [PMID: 37167782 DOI: 10.1016/j.placenta.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 04/19/2023] [Accepted: 05/03/2023] [Indexed: 05/13/2023]
Abstract
INTRODUCTION Preeclampsia (PE) pathogenesis is explained by the two-stage disorder theory. However, mechanisms underlying hypertension and proteinuria in PE remain unclear. The role of (pro)renin receptor (PRR) in PE pathology has received special attention. We examined endothelin-1 (ET-1) production via placental PRR in a PE mouse model. METHODS At 14.5 day-post-coitum (DPC), we performed a reduced uterine perfusion pressure (RUPP) operation, ligating the uterine arteriovenous vessels in female mice. We also infused these mice with a PRR inhibitor, decoy peptide in the handle region of prorenin (HRP) for mice (NH2-RIPLKKMPSV-COOH). At 18.5 DPC, blood, urine, and placenta were collected; fetus and placenta were weighed. We evaluated placental hypoxia using quantitative polymerase chain reaction (PCR), with hypoxia-inducible factor-1α (HIF-1α) as index. We also evaluated PRR, transforming growth factor-β1 (TGF-β1), and ET-1 expression in the placenta using quantitative PCR and western blotting. ET-1 concentration in blood plasma was assessed using enzyme-linked immunosorbent assay. RESULTS Blood pressure and proteinuria significantly increased, and fetal and placental weights decreased in RUPP mice. HIF-1α, PRR, TGF-β1, and ET-1 expressions considerably increased in RUPP mice placentas. ET-1 concentration in RUPP mice blood plasma was markedly increased. PRR inhibitor suppressed these changes. DISCUSSION In PE model mice that underwent RUPP treatment, placental hypoxia increased PRR and ET-1 expression suggesting a causative relationship between ET-1 and intracellular PRR signaling. RUPP treatment, when combined with HRP, reversed the effect of elevated ET-1 levels in the model. This study may help to elucidate the pathogenesis of PE considering PRR and ET-1.
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Affiliation(s)
- Sakurako Mishima
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan
| | - Takashi Mitsui
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan
| | - Kazumasa Tani
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan
| | - Hikaru Ooba
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan
| | - Tomohiro Mitoma
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan
| | - Akiko Ohira
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan
| | - Jota Maki
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan
| | - Satoe Kirino
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan
| | - Eriko Eto
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan
| | - Kei Hayata
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan
| | - Hisashi Masuyama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan.
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Mitoma T, Maki J, Ooba H, Eto E, Takahashi K, Kondo T, Ikeda T, Sakamoto Y, Mitsuhashi T, Masuyama H. Protocol for a randomised, placebo-controlled, double-blinded clinical trial on the effect of oestrogen replacement on physical performance to muscle resistance exercise for older women with osteoarthritis of knee joint: the EPOK trial. BMC Geriatr 2023; 23:104. [PMID: 36800940 PMCID: PMC9938988 DOI: 10.1186/s12877-023-03828-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 02/15/2023] [Indexed: 02/20/2023] Open
Abstract
BACKGROUND Knee osteoarthritis (KOA) is highly prevalent in older women, and previous studies suggest the involvement of hormonal factors play a role in the pathogenesis of osteoarthritis. KOA causes musculoskeletal impairment, resulting in decreased physical activity, muscle mass, and strength, which leads to sarcopenia and further increases the burden on healthcare systems. Oestrogen replacement therapy (ERT) improves joint pain and muscle performance in early menopausal women. Muscle resistance exercise (MRE) is a non-pharmacological method that preserves the physical functions of patients with KOA. However, data on short-term oestrogen administration combined with MRE in postmenopausal women, especially in those aged > 65 years, are limited. Therefore, this study presents a protocol of a trial aimed to examine the synergistic effect of ERT and MRE on lower-limb physical performance in older women with KOA. METHODS We will conduct a double-blinded, randomised placebo-controlled trial in 80 Japanese women aged > 65 years living independently with knee pain. The participants will be randomly categorised into two groups: (1) 12-week MRE programme with transdermal oestrogen gel containing 0.54 mg oestradiol per push and (2) 12-week MRE programme with placebo gel. The primary outcome measured using the 30-s chair stand test, and secondary outcomes (body composition, lower-limb muscle strength, physical performance, self-reported measure of knee pain, and quality of life) will be measured at baseline, 3 months, and 12 months, and these outcomes will be analysed based on the intention-to-treat. DISCUSSION The EPOK trial is the first study to focus on the efficacy of ERT on MRE among women aged > 65 years with KOA. This trial will provide an effective MRE to prevent KOA-induced lower-limb muscle weakness, confirming the benefit of short-term oestrogen administration. TRIAL REGISTRATION Japan Registry of Clinical Trials: jRCTs061210062. Registered 17th December 2021, https://jrct.niph.go.jp/en-latest-detail/jRCTs061210062 .
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Affiliation(s)
- Tomohiro Mitoma
- grid.261356.50000 0001 1302 4472Department of Obstetrics and Gynecology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Jota Maki
- grid.261356.50000 0001 1302 4472Department of Obstetrics and Gynecology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Hikaru Ooba
- grid.261356.50000 0001 1302 4472Department of Obstetrics and Gynecology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Eriko Eto
- grid.261356.50000 0001 1302 4472Department of Obstetrics and Gynecology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Kasumi Takahashi
- Department of Obstetrics and Gynecology, Ochiai Hospital, Okayama, Japan
| | - Tsunemasa Kondo
- Department of Obstetrics and Gynecology, Ochiai Hospital, Okayama, Japan
| | - Tomohiro Ikeda
- grid.261356.50000 0001 1302 4472Department of Rehabilitation Medicine, Okayama University, Okayama, Japan
| | - Yoko Sakamoto
- grid.261356.50000 0001 1302 4472Center for Innovative Clinical Medicine, Okayama University, Okayama, Japan
| | - Toshiharu Mitsuhashi
- grid.261356.50000 0001 1302 4472Center for Innovative Clinical Medicine, Okayama University, Okayama, Japan
| | - Hisashi Masuyama
- Department of Obstetrics and Gynecology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
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Matsuo A, Hamada H, Ooba H, Inoue K, Yamakawa T, Chikazu D. Virtual reality endoscopic-assisted implant surgery using head mount monitor. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Fudaba H, Shimomura T, Abe T, Matsuta H, Momii Y, Sugita K, Ooba H, Kamida T, Hikawa T, Fujiki M. Comparison of multiple parameters obtained on 3T pulsed arterial spin-labeling, diffusion tensor imaging, and MRS and the Ki-67 labeling index in evaluating glioma grading. AJNR Am J Neuroradiol 2014; 35:2091-8. [PMID: 24994829 DOI: 10.3174/ajnr.a4018] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Pulsed arterial spin-labeling, DTI, and MR spectroscopy provide useful data for tumor evaluation. We evaluated multiple parameters by using these pulse sequences and the Ki-67 labeling index in newly diagnosed supratentorial gliomas. MATERIALS AND METHODS All 32 patients, with grade II (3 each of diffuse astrocytoma, oligodendroglioma, and oligoastrocytoma), grade III (3 anaplastic astrocytomas, 4 anaplastic oligodendrogliomas, and 1 anaplastic oligoastrocytoma), and grade IV (14 glioblastomas and 1 glioblastoma with an oligodendroglioma component) cases underwent pulsed arterial spin-labeling, DTI, and MR spectroscopy studies by using 3T MR imaging. The following variables were used to compare the tumors: relative cerebral blood flow, fractional anisotropy; ADC tumor/normal ratios; and the Cho/Cr, NAA/Cho, NAA/Cr, and lactate/Cr ratios. A logistic regression and receiver operating characteristic analysis were used to assess parameters with a high sensitivity and specificity to identify the threshold values for separate grading. We compared the Ki-67 index with various MR imaging parameters in tumor specimens. RESULTS Significant correlations were observed between the Ki-67 index and the mean, maximum, and minimum ADC, Cho/Cr, and lactate/Cr ratios. The receiver operating characteristic analysis showed that the combination of the minimum ADC and Cho/Cr ratios could differentiate low-grade and high-grade gliomas, with a sensitivity and specificity of 87.0% and 88.9%, respectively. The mean and maximum relative cerebral blood flow ratios were used to classify glioblastomas from other-grade astrocytomas, with a sensitivity and specificity of 92.9% and 83.3%, respectively. CONCLUSIONS Our findings indicate that pulsed arterial spin-labeling, DTI, and MR spectroscopy are useful for predicting glioma grade. Additionally, the parameters obtained on DTI and MR spectroscopy closely correlated with the proliferative potential of gliomas.
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Affiliation(s)
- H Fudaba
- From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan.
| | - T Shimomura
- From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan
| | - T Abe
- From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan
| | - H Matsuta
- From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan
| | - Y Momii
- From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan
| | - K Sugita
- From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan
| | - H Ooba
- From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan
| | - T Kamida
- From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan
| | - T Hikawa
- From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan
| | - M Fujiki
- From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan
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Yokota N, Morita H, Iwasaki S, Ooba H, Ideura T, Yoshimura A. Reversible nephrotic syndrome in a patient with amyloid A amyloidosis of the kidney following methicillin-resistant Staphylococcus aureus infection. Nephron Clin Pract 2001; 87:177-81. [PMID: 11244314 DOI: 10.1159/000045908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A common form of methicillin-resistant Staphylococcus aureus (MRSA) associated glomerulonephritis is either an endocapillary proliferative glomerulonephritis or a crescentic glomerulonephritis. This report describes the development of reversible nephrotic syndrome following MRSA infection in a patient with amyloid A amyloidosis. The patient had been diagnosed as having rheumatoid arthritis for 50 years. Suppurative arthritis due to MRSA became complicated 2 years prior to admission to our hospital. In the meantime, a nonnephrotic-range proteinuria developed. Two weeks before admission, nephrotic syndrome developed. The serum creatinine level remained unchanged throughout the course, but common features characteristic of MRSA-associated glomerulonephritis were observed in this patient, such as elevated serum IgG and IgA levels. A renal biopsy specimen showed glomerular amyloid A amyloidosis of a nodular type, infiltrated mononuclear cells in the mesangium, deposition of IgG, IgA, and C3, and swelling of glomerular endothelial cells. There were no crescentic glomeruli. Following surgical eradication of the MRSA focus in the right knee joint, nephrotic syndrome disappeared. Hence, it was highly possible that MRSA infection induced a reversible nephrotic syndrome by causing reversible injuries to glomerular endothelial cells. The description of this case serves to illustrate the range of MRSA infections that may cause various forms of glomerulonephritides.
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Affiliation(s)
- N Yokota
- Division of Nephrology, Department of Medicine, Showa University Fujigaoka Hospital Yokohama, Japan
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Musha H, Kunishima T, Awaya T, Iwasaki T, Nagashima J, Nakamura T, Oohama N, Ooba H, Arai S, Takada H, Murayama M. Influence of exercise on QT dispersion in ischemic heart disease. Jpn Heart J 1997; 38:219-26. [PMID: 9201109 DOI: 10.1536/ihj.38.219] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
UNLABELLED QT dispersion (QTd: maximum QT interval-minimum QT interval) is associated with severe cardiac arrhythmia and with abnormal ventricular repolarization. We investigated the influence of exercise on QTd in patients with ischemic heart disease. On standard 12-lead electrocardiograms, QTd was measured before and after treadmill exercise in 7 normal subjects, 17 patients with effort angina pectoris (and > or = 75% stenosis on coronary arteriography), and 33 patients with old myocardial infarction. Bazett's formula was used to obtain the corrected QTd (QTcd). The pre-exercise resting QTcd was 45.9 +/- 10.6, 44.3 +/- 15.2, and 74.8 +/- 28.1 msec in the respective groups, being significantly greater in the infarct group (p < 0.05). The QTcd at 5 min after exercise was respectively 49.3 +/- 9.0, 58.8 +/- 19.9, and 75.4 +/- 30.9 msec (p = 0.0347, infarct vs. controls). The difference in QTcd was significant for the angina group before and after physical exercise (p = 0.0003). There was a significant increase of QTcd after exercise in the angina group whether or not the patients were receiving beta-blockers. The infarct patients without beta-blocker therapy showed an increase of QTcd after exercise, while those receiving beta-blockers showed a decrease. The post-exercise difference between these subgroups was significant (p = 0.0351). CONCLUSIONS QTcd was significantly increased by exercise in the angina group, possibly reflecting impaired repolarization due to ischemia. Inhibition of the increase in QTd by beta-blockers suggested a possible preventive effect on severe arrhythmias due to nonhomogeneous ventricular repolarization.
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Affiliation(s)
- H Musha
- Department of Cardiology, Yokohama-city Seibu Hospital, St. Marianna University, School of Medicine, Japan
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So K, Kioka K, Moriyoshi Y, Ooba H, Aoki T, Nebiki H, Okawa K, Oka H, Yamada H, Harihara S, Li M, Yamasaki O, Seki T, Kuroki T, Kobayashi K. [Percutaneous microwave coagulation therapy for hepatocellular carcinoma--study on its therapeutic effect in surgical cases]. Nihon Shokakibyo Gakkai Zasshi 1996; 93:398-405. [PMID: 8752757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Six patients with hepatocellular carcinoma were subjected to percutaneous microwave coagulation therapy (PMCT) by ultrasonic guiding. The size of the main tumor in the present cases was limited to not more than 2 cm. From 18 to 48 days after PMCT, each patient was subjected to surgery and pathological examination. By macroscopic observation, the PMCT area including both non-tumor and tumor regions looked yellowish white, and the boundary was clearly recognized. In the histological examination, the coagulation area surrounded by fibrous capsule was found, and deletion of nuclei and changes in stainability were observed in the marginal region. These changes indicated obvious coagulation necrosis, but the changes became less intense toward the center in the area, and in some portions, the tissue was indistinguishable from viable cells by light microscopy. In 2 cases out of the 6, part of the tumor remained outside the coagulation area. Since only the area determined by the microwave electrode is coagulated to cause necrosis on PMCT, sufficient safety margin should be required.
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Affiliation(s)
- K So
- Department of Gastroenterology, Osaka City General Hospital, Japan
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Abstract
The authors present an unexpected finding of Tl-201 uptake in the intracerebral lesions due to candidiasis. SPECT demonstrated the extent of the lesions and a high target-to-background ratio. The regions where abnormal Tl-201 accumulation was seen were nearly consistent with CT scans of those enhanced by a contrast agent. After treatment, most of the abnormal Tl-201 accumulation disappeared.
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Affiliation(s)
- N Tonami
- Department of Nuclear Medicine, Kanazawa University, School of Medicine, Japan
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