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Hartley NJ, Grenzer J, Huang L, Inubushi Y, Kamimura N, Katagiri K, Kodama R, Kon A, Lu W, Makita M, Matsuoka T, Nakajima S, Ozaki N, Pikuz T, Rode A, Sagae D, Schuster AK, Tono K, Voigt K, Vorberger J, Yabuuchi T, McBride EE, Kraus D. Erratum: Using Diffuse Scattering to Observe X-Ray-Driven Nonthermal Melting [Phys. Rev. Lett. 126, 015703 (2021)]. PHYSICAL REVIEW LETTERS 2022; 128:169901. [PMID: 35522523 DOI: 10.1103/physrevlett.128.169901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Indexed: 06/14/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.126.015703.
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Debessai M, Matsuoka T, Hamlin JJ, Schilling JS, Shimizu K. Retraction: Pressure-Induced Superconducting State of Europium Metal at Low Temperatures [Phys. Rev. Lett. 102, 197002 (2009)]. PHYSICAL REVIEW LETTERS 2021; 127:269902. [PMID: 35029505 DOI: 10.1103/physrevlett.127.269902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Indexed: 06/14/2023]
Abstract
Retraction of DOI: 10.1103/PhysRevLett.102.197002.
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Stranzl T, Bernstein D, Matsuoka T, Maekawa Y, Sejer Andersen P, Nolte J, Hulstrøm V, Nolte H. P031 SIMILARITIES IN EFFICACY AND SAFETY OF SUBLINGUAL IMMUNOTHERAPY TABLETS ACROSS GEOGRAPHIC REGIONS IN CLINICAL TRIALS. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hartley NJ, Grenzer J, Huang L, Inubushi Y, Kamimura N, Katagiri K, Kodama R, Kon A, Lu W, Makita M, Matsuoka T, Nakajima S, Ozaki N, Pikuz T, Rode AV, Sagae D, Schuster AK, Tono K, Voigt K, Vorberger J, Yabuuchi T, McBride EE, Kraus D. Using Diffuse Scattering to Observe X-Ray-Driven Nonthermal Melting. PHYSICAL REVIEW LETTERS 2021; 126:015703. [PMID: 33480771 DOI: 10.1103/physrevlett.126.015703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/09/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
We present results from the SPring-8 Angstrom Compact free electron LAser facility, where we used a high intensity (∼10^{20} W/cm^{2}) x-ray pump x-ray probe scheme to observe changes in the ionic structure of silicon induced by x-ray heating of the electrons. By avoiding Laue spots in the scattering signal from a single crystalline sample, we observe a rapid rise in diffuse scattering and a transition to a disordered, liquidlike state with a structure significantly different from liquid silicon. The disordering occurs within 100 fs of irradiation, a timescale that agrees well with first principles simulations, and is faster than that predicted by purely inertial behavior, suggesting that both the phase change and disordered state reached are dominated by Coulomb forces. This method is capable of observing liquid scattering without masking signal from the ambient solid, allowing the liquid structure to be measured throughout and beyond the phase change.
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Saito Y, Mori N, Saito K, Matsuoka T, Tateishi K, Kitahara H, Fujimoto Y, Kobayashi Y. Greater coronary lipid core plaque assessed by near-infrared spectroscopy intravascular ultrasound in patients with elevated xanthine oxidoreductase: a mechanistic insight. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Elevated serum uric acid level was reportedly associated with greater coronary lipid plaque. Xanthine oxidoreductase (XOR) is a rate-limiting enzyme in purine metabolism and believed to play important roles in coronary atherosclerosis. However, the relation of XOR to coronary lipid plaque and its mechanism are unclear.
Purpose
The aim of this study was to assess the impact of XOR on coronary lipid plaque and the associated factors with XOR in coronary artery disease (CAD).
Methods
Patients with stable CAD undergoing elective percutaneous coronary intervention under near-infrared spectroscopy intravascular ultrasound (NIRS-IVUS) guidance were prospectively enrolled. They were divided into three groups according to serum XOR activities; low, normal, and high. Coronary lipid core plaques in non-target vessels were evaluated by NIRS-IVUS with lipid core burden index (LCBI) and a maximum LCBI in 4 mm (maxLCBI4mm). Systemic endothelial function and inflammation were assessed with reactive hyperemia index (RHI) and high-sensitivity C-reactive protein, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio.
Results
Of 68 patients, 26, 31, and 11 were classified as low, normal, and high XOR activity groups. LCBI (474.4±171.6 vs. 347.4±181.6 vs. 294.0±155.9, p=0.04) and maxLCBI4mm (102.1±56.5 vs. 65.6±48.5 vs. 55.6±37.8, p=0.04) were significantly higher in high XOR group than in normal and low XOR groups. Although RHI was significantly correlated with body mass index, diabetes, current smoking, and high-density lipoprotein cholesterol, no relation was found between XOR activity and RHI (Figure). There were also no relations between XOR activity and high-sensitivity C-reactive protein, neutrophil-to-lymphocyte ratio, or platelet-to-lymphocyte ratio (Figure).
Conclusion
Elevated XOR activity was associated with greater coronary lipid plaque in patients with stable CAD, without significant relations to systemic endothelial function and inflammation.
Funding Acknowledgement
Type of funding source: None
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Hasegawa H, Kono T, Sakane K, Matsuoka T, Soyama A, Murakami S, Hoshiga M. Increased oxygen uptake and utilization in the peripheral muscles, rather than cardiac function reserve, may be determinants of increased peak VO2 by cardiac rehabilitation in heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Peak oxygen consumption (peak VO2) is a major prognostic parameter in heart failure (HF). Previous studies have shown a relationship between peak VO2 and impaired oxygen uptake and utilization in the peripheral muscles. The purpose of this study was to clarify the determinant of increased peak VO2 by cardiac rehabilitation (CR) in patients with HF.
Methods
We performed echocardiography during upright ramp bicycle cardiopulmonary exercise test in 30 HF patients (61±1 years of age, 80% male) before and 6 months after CR. HR reserve was determined as the change in HR from rest to peak exercise, expressed as a percentage of the predicted maximal HR reserve. Elastance index (EAI) and LV end-systolic elastance index (ELVI) were derived as the ratio of end-systolic pressure to stroke volume index and end-systolic volume index, respectively. End-systolic pressure was estimated from the equation 0.9 × brachial systolic blood pressure. Ventriculo-arterial coupling (VAC) was calculated as the quotient of EAI and ELVI. The ratio of LDEDVI to E/e' mean was used to evaluate LV diastolic compliance. Systemic vascular resistance index was calculated as mean arterial pressure divided by echocardiography calculated cardiac index and multiplied by 80. The arterial venous oxygen content difference (C (A-V) O2 gradient) was calculated by using the Fick equation as: VO2/echocardiography calculated cardiac output.
Results
Peak VO2 and C (A-V) O2 gradient were increased by CR. However, heart rate reserve, systolic reserve, VAC, diastolic reserve and vasodilation reserve were unchanged by CR (Table 1).
Conclusions
Increased oxygen uptake and utilization in the peripheral muscles, rather than cardiac function reserve, may be determinants of increased peak VO2 by CR in HF.
Table 1
Funding Acknowledgement
Type of funding source: None
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Suresh Kumar V, Ji SY, Zhang YT, Shojiki K, Choi JH, Kimura T, Hanada T, Katayama R, Matsuoka T. Dependence of the V/III Ratio on Indium Incorporation in InGaN Films Grown by Metalorganic Vapour Phase Epitaxy. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2020; 20:2979-2986. [PMID: 31635636 DOI: 10.1166/jnn.2020.17466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
InGaN epitaxial layers were grown on c-plane sapphire substrates using the metalorganic vapour phase epitaxy (MOVPE) system at 760 °C. By varying the total flow rate of group-III sources (TMI+TEG) with a fixed molar ratio of group-III sources [TMI/(TMI+TEG)], the influence of V/III ratio were investigated from 4500 to 20000. The grown N-polar InGaN layers were investigated by atomic force microscopy and it is found that the surface roughness decreases with increasing the V/III ratios. High resolution X-ray diffraction analyses show that the phase separation decreases with increasing the V/III ratios. Photoluminescence measurements reveal that the peak position of the band-edge emission shifted toward the shorter wavelength with increasing the V/III ratios. Reciprocal space mapping (RSM) analyses were carried out on InGaN films. At low V/III ratio, the phase separation can be detected in InGaN films.
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Takahashi S, Megumi Y, Sakata Y, Ikezawa H, Matsuoka T, Kawai A. One-year follow-up results of eribulin for soft-tissue sarcoma including rare subtypes in a real-world observational study in Japan. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz283.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Yamada T, Yoshida Y, Satoh A, Aisu N, Matsuoka T, Koganemaru T, Kajitani R, Munechika T, Matsumoto Y, Nagano H, Komono A, Sakamoto R, Morimoto M, Arima H, Hasegawa S. The validity of evaluations for chemotherapy-induced peripheral neuropathy (CIPN). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz265.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mabey P, Albertazzi B, Michel T, Rigon G, Makarov S, Ozaki N, Matsuoka T, Pikuz S, Pikuz T, Koenig M. Characterization of high spatial resolution lithium fluoride X-ray detectors. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:063702. [PMID: 31255030 DOI: 10.1063/1.5092265] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 05/21/2019] [Indexed: 06/09/2023]
Abstract
The response of lithium fluoride (LiF) crystal detectors to monochromatic X-rays is measured in the multi-kilo-electron-volt range. This response, as a function of the X-ray dose, is independent of photon energy with no saturation level found. The response, as a function of the incident energy flux, is found to increase for photons of lower energy due to the differing attenuation lengths of X-ray photons within the crystal. Small differences are seen between different confocal microscopes used to scan the data, suggesting the need for absolute calibration. The spatial resolution of the LiF is also measured (1.19-1.36 μm) and is found to be independent of incident photon energy. Finally, a photometric study is performed in order to assess the feasibility of using these detectors at current X-ray free electron laser and laser facilities worldwide.
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Matsuoka T, Fujihisa H, Hirao N, Ohishi Y, Mitsui T, Masuda R, Seto M, Yoda Y, Shimizu K, Machida A, Aoki K. Erratum: Structural and Valence Changes of Europium Hydride Induced by Application of High-Pressure H_{2} [Phys. Rev. Lett. 107, 025501 (2011)]. PHYSICAL REVIEW LETTERS 2019; 122:179901. [PMID: 31107077 DOI: 10.1103/physrevlett.122.179901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Indexed: 06/09/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.107.025501.
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Jiang Y, Iwata S, Yang C, Shirakawa K, Matsuoka T. Cartilage regeneration by autologous adipose-derived mesenchymal stem cells for the treatment of osteoarthritis. Cytotherapy 2019. [DOI: 10.1016/j.jcyt.2019.03.501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Ueno D, Matsuoka T, Kato Y, Ayani N, Yoneda S, Matsuda M, Narumoto J. Pilot study of correlations among interoception, cognition, and depressive symptoms in the elderly. Int J Psychophysiol 2018. [DOI: 10.1016/j.ijpsycho.2018.07.407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Shanberge JN, Matsuoka T. Studies Regarding the Effect of Foreign-Surface Contact on the One-Stage Prothrombin Time Determination. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1649446] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryThe shortening of the one-stage prothrombin time of plasma brought about by increased foreign surface contact is dependent upon “activation” of factor VII. This activation of VII is the result of a series of activations involving factors XII, IX and probably XI as well. In this it is similar to the activation of factor VIII. Although the prothrombin time in an individual with hemophilia B or the Hageman trait is ‘‘normal”, no shortening occurs after increased foreign surface contact. Factor VII deficient plasma with normal levels of factors XII and IX is “activated” by “contact” in proportion to the level of VII present. No increase in activity of factors II, V, or X was observed after increased foreign surface contact.
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Naiki Y, Matsuo K, Matsuoka T, Maeda Y. Possible Role of Hepatocyte Growth Factor in Regeneration of Human Peritoneal Mesothelial Cells. Int J Artif Organs 2018; 28:141-9. [PMID: 15770602 DOI: 10.1177/039139880502800210] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Human peritoneal mesothelial cells (HPMCs) play an important role in peritoneal functions. During long term peritoneal dialysis, it has been reported that HPMCs are damaged by high glucose solution via the signal of transforming growth factor (TGF)- ß1 produced by HPMCs. In this study, we focused on the effect of hepatocyte growth factor (HGF), known as an anti-fibrotic and anti-TGF-ß1 agent, on HPMCs damaged by high glucose solution. HPMCs were isolated from specimens of the omentum from nonuremic patients after informed consent had been obtained. After confirming adhesion for 6 hours, 100 μL of DMEM with 0.5%FCS were added at different concentrations (D-glucose; 6, 30mM) with or without HGF (10, 30, 100 ng/mL) for 48 hours. We examined the effects of a high concentration of glucose and then focused on following four critical points: 1) the production of HGF from HPMCs exposed to a high concentration of glucose, 2) the expression of c-Met on HPMCs, 3) the viability of those cells, and 4) matrix metalloproteinase-2 (MMP-2) and tissue inhibitors of metalloproteinase-2 (TIMP-2). The following significant changes are described herein: high glucose solution and TGF-ß1 i) decreased HGF production from HPMCs and ii) up-regulated expression of c-Met on HPMCs, and addition of HGF iii) restored viability of HPMCs damaged by glucose, iv) suppressed TGF-ß1 production by HGF, and v) induced up-regulation of MMP-2 and decreased TIMP-2 production by HPMCs. Levels of HGF decreased by high concentrations of glucose in the peritoneal cavity may induce the loss of HPMCs and thereby result in peritoneal fibrosis. These results suggest that HGF is an effective agent in the regeneration of peritoneal membrane damaged by high glucose solution.
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Shirakawa K, Izawa H, Sotozaki N, Matsuoka T. The relation with a sleep gene and the life gene. On genetic interaction by the systems biological analysis. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Izawa H, Shirakawa K, Sotozaki N, Matsuoka T. Examination of the method that is most suitable for the influence on sleep in the transplant of the mesenchyma system stem cell and cognitive function and QOL evaluation. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yamamoto N, Asada R, Kawahara R, Hagiya H, Akeda Y, Shanmugakani R, Yoshida H, Yukawa S, Yamamoto K, Takayama Y, Ohnishi H, Taniguchi T, Matsuoka T, Matsunami K, Nishi I, Kase T, Hamada S, Tomono K. Prevalence of, and risk factors for, carriage of carbapenem-resistant Enterobacteriaceae among hospitalized patients in Japan. J Hosp Infect 2017; 97:212-217. [DOI: 10.1016/j.jhin.2017.07.015] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 07/15/2017] [Indexed: 01/22/2023]
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Wakejima R, Yamada T, Kumata S, Shinohara S, Watanabe R, Matsuoka T, Nagai S, Matsuoka K, Ueda M, Miyamoto Y. P-221RIGHT MIDDLE LOBE ATELECTASIS FOLLOWING COMPLETE VIDEO-ASSISTED THORACOSCOPIC RIGHT UPPER LOBECTOMY. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shinohara S, Yamada T, Kumata S, Wakejima R, Watanabe R, Matsuoka T, Nagai S, Matsuoka K, Ueda M, Miyamoto Y. P-192IMPACT OF PULMONARY VEIN ORIFICE SIZE ON ARTERIAL THROMBOEMBOLISM FOLLOWING LEFT UPPER LOBECTOMY. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sakata Y, Iwata H, Ikezawa H, Fudetani R, Tonoda D, Uchida Y, Hasegawa H, Matsuoka T. Prospective observational study of peripheral neuropathy in breast cancer patients treated with eribulin. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx365.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Shinohara S, Tanikawa T, Hada T, Funaki I, Nishida H, Matsuoka T, Otsuka F, Shamrai KP, Rudenko TS, Nakamura T, Mishio A, Ishii H, Teshigahara N, Fujitsuka H, Waseda S. High-Density Helicon Plasma Sources: Basics and Application to Electrodeless Electric Propulsion. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst13-a16896] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Matsuoka T, Suzuki M, Sano M, Hayashida K, Tamura T, Homma K, Fukuda K, Sasaki J. P1568Hydrogen gas inhalation improves survival in rats with lethal haemorrhagic shock. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Matsuoka T, Kato M, Shinoda Y, Ohashi K, Yoshida S, Mori T, Tachi T, Yoshimura T, Teramachi H. Evaluation of antimicrobial stewardship (AS) for appropriate use of antimicrobial agents. DIE PHARMAZIE 2017; 72:296-299. [PMID: 29441876 DOI: 10.1691/ph.2017.6968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We implemented an antimicrobial stewardship (AS) program whereby pharmacists sought appropriate use of antimicrobial agents in January 2012. At that time, we targeted anti-methicillin-resistant Staphylococcus aureus (MRSA) agents and carbapenems; however, in January 2014, we added tazobactam/piperacillin (TAZ/PIPC). We evaluated outcomes using multilateral analyses. The average one-day dosage of carbapenems increased; however, the duration of administration and number of recipient patients decreased significantly (P < 0.01). Moreover, the percentage of patients receiving meropenem (MEPM), for whom the time above minimal inhibitory concentration (MIC) was 40% or higher increased (P < 0.01). In contrast, patient utilization of TAZ/PIPC increased significantly after targeting of carbapenems as specific antibacterial agents. However, after TAZ/PIPC was targeted as a specific antibacterial agent, the number of TAZ/PIPC administrations decreased significantly (P < 0.01). The duration of hospitalization and mortality rate in patients receiving specific antibacterial agents significantly decreased after implementation of the AS program (P < 0.01). In conclusion, pharmacist's interventions to provide AS and patient follow-up reduced improper use and promoted proper administration of antibacterial agents. Furthermore, AS was effective in improving patient prognoses and suppressing drug-resistant strains, as well as promoting effective treatment.
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Matsuoka T, Tsujioka H, Matsuoka S, Sorano S, Toyama A, Mori H, Yamamoto H, Nakamura S, Fukami T, Goto M, Matsuoka R, Eguchi F. Retroperitoneal leiomyosarcoma: a case report. EUR J GYNAECOL ONCOL 2017; 38:150-152. [PMID: 29767887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Retroperitoneal leiomyosarcoma is a relatively rare and aggressive tumor. Because of its rarity, it is difficult to arrive at a definite diagnosis preoperatively and to design an effective strategy. Here the authors report a case of peritoneal leiomyosarcoma in which diagnosis was difficult because the clinical course resembled that of ovarian cancer. A 77-year-old woman diagnosed with ovarian cancer underwent laparotomy. The excised tumor contained a necrotic polypoid mass that histologically displayed the features of leiomyosarcoma. The patient received adjuvant chemotherapy with a combination of gemcitabine and docetaxel but died two months after surgery owing to the aggressive behavior of the tumor. Because the preoperative diagnosis in this case was ovarian cancer, arriving at a treatment strategy assuming peritoneal leiomyosarcoma was difficult. If complete surgical resection of tumor is not performed, as in the present case, the prognosis can be extremely poor.
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