Yamaguchi Sayaka

写真a

Title

Instructor

Researcher Number(JSPS Kakenhi)

70571397
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Current Affiliation Organization 【 display / non-display 】

  • Duty   University of the Ryukyus   Graduate School of Medicine   Instructor  

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External Career 【 display / non-display 】

  • 2016.07
    　
    　

    University of the Ryukyus, Graduate School of Medicine, Instructor  

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Published Papers 【 display / non-display 】

  • Two Cases of Syringocystadenocarcinoma Papilliferum of Head

    HORIKAWA Tomohisa, KARIYA Yoshiyuki, YAMAGUCHI Sayaka, YANAGI Teruki, TAKAHASHI Kenzo

    The Nishinihon Journal of Dermatology ( Western Division of Japanese Dermatological Association )  87 ( 3 ) 236 - 241   2025.06

    Type of publication: Research paper (scientific journal)

  • Fatal pseudomonas sepsis associated with crusted scabies in an immunosuppressed patient: Report of a case

    Komiyama, S; Yamaguchi, S; Horikawa, T; Omine, T; Iwamoto, R; Yonamine, S; Miyagi, T; Yanagi, T; Takahashi, K

    JOURNAL OF DERMATOLOGY ( Journal of Dermatology )  52 ( 5 ) e343 - e344   2025.05 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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  • A 37-Year Retrospective Analysis Reveals a High Rate of Cutaneous Angiosarcoma of the Scalp in Okinawa, Japan

    Ohira, A; Utsumi, D; Awazawa, R; Yagi, N; Awazawa, T; Yamaguchi, S; Yanagi, T; Takahashi, K

    CANCER SCIENCE ( Cancer Science )  116 ( 4 ) 1059 - 1067   2025.04 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

  • A 37-Year Retrospective Analysis Reveals a High Rate ofCutaneous Angiosarcoma of the Scalp in Okinawa, Japan

    Ohira Aoi, Utsumi Daisuke, Awazawa Ryoko, Yagi Nobutake, Awazawa Tsuyoshi, Yamaguchi Sayaka, Yanagi Teruki, Takahashi Kenzo

    Cancer Science ( Wiley )    1 - 9   2025.01 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

    　View Summary

    Angiosarcoma (AS) is a rare, aggressive malignancy originating from vascular or lymphatic endothelial cells. Despite its severity, little is known about its epidemiology, and no geographical regions have previously been identified as having an exceptionally high incidence. We retrospectively analyzed medical records spanning 37 years (1987–2023) in Okinawa, Japan, identifying 135 cases of AS that were used to calculate its incidence. This incidence was compared to global data to highlight significant regional differences. Factors related to patients' survival were also assessed. The age-adjusted incidence of AS of the scalp in Okinawa was 4.1 per million per year (mpy; 2015 Japanese model population) or 2.0 per mpy (2000 US standard population), significantly higher than the global data, including in the United States (about eightfold higher) and mainland Japan (about fourfold higher). The estimated five-year survival for patients with AS of the scalp in Okinawa was 9.2%. Multivariate analysis identified surgery, chemotherapy, and radiotherapy as significant factors associated with patient survival. This study provides the first evidence of a significantly higher incidence rate of AS of the scalp in Okinawa. Given its rarity, further research is crucial to uncover the epidemiological, genetic, and environmental factors driving this cancer.

  • Late-onset Hailey-Hailey disease with a novel ATP2C1 mutation in an older female patient.

    Horikawa T, Yamaguchi S, Omine T, Miyagi T, Utsumi D, Takahashi K

    JAAD case reports ( JAAD Case Reports )  50   91 - 93   2024.08 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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Other Papers 【 display / non-display 】

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