Dermatology, Dermatology

Basics and Applications of Dermoscopy
KOGA, Hiroshi
The Shinshu Medical Journal, 71(2), 87-98, Apr. 2023

Concordance in judgment of clinical borders of basal cell carcinomas in Japanese patients: A preliminary study of JCOG2005 (J-BASE-MARGIN)
Anna Kamimura, Yasuhiro Nakamura, Tatsuya Takenouchi, Shigeto Matsushita, Toshikazu Omodaka, Kentaro Yamamura, Hiroshi Uchi, Shusuke Yoshikawa, Hiroto Yanagisawa, Takamichi Ito, Yoshio Kiyohara, Yoshio Nakamura, Megumi Aoki, Shoichiro Ishizuki, Kohei Oashi, Takuya Miyagawa, Taku Maeda, Dai Ogata, Naohito Hatta, Shuichi Ohe, Taiki Isei, Akira Takahashi, Yoshiyasu Umeda, Buntaro Yamaguchi, Masashi Ishikawa, Kohei Horimoto, Yasuhiro Fujsawa, Jiro Uehara, Yoshitsugu Shibayama, Yukiko Kiniwa, Yu Kawahara, Taisuke Matsuya, Hisashi Uhara, Junji Kato, Yoshiyuki Nakamura, Takuo Murakami, Kenjiro Namikawa, Koji Yoshino, Takeru Funakoshi, Sumiko Takatsuka, Yu Matsui, Jin Sasaki, Hiroshi Koga, Kenji Yokota, Takaya Komori, Satoshi Fukushima, Naoya Yamazaki
The Journal of Dermatology, 49(9), 837-844, Sep. 2022

A phase I study of the safety and efficacy of talimogene laherparepvec in Japanese patients with advanced melanoma
Naoya Yamazaki, Taiki Isei, Yoshio Kiyohara, Hiroshi Koga, Takashi Kojima, Tatsuya Takenouchi, Kenji Yokota, Kenjiro Namikawa, Min Yi, Alissa Keegan, Satoshi Fukushima
CANCER SCIENCE, 113(8), 2798-2806, Aug. 2022

Late Onset of Cardiac Metastasis of a Melanoma following Nivolumab Immunotherapy
Nakamura K. · Koga H. · Takazawa Y. · Omodaka T. · Kiniwa Y. · Okuyama R.
Case Reports in Oncology, 15(2), 654-658, Jun. 2022

Japanese Dermatological Association Guidelines: Outlines of Guidelines for Cutaneous Squamous Cell Carcinoma 2020
Shin-Ichi Ansai , Yoshihiro Umebayashi , Noriyuki Katsumata , Hiroshi Kato , Takafumi Kadono , Toshihiro Takai , Takeshi Namiki , Masahiro Nakagawa , Toshinori Soejima , Hiroshi Koga , Makoto Sugaya ,
The Journal of Dermatology, 48(7), e288-e311, Jul. 2021

Outlines of the Japanese guidelines for the management of primary cutaneous lymphomas 2020
Ohtsuka M, Hamada T, Miyagaki T, Shimauchi T, Yonekura K, Kiyohara E, Fujita H, Izutsu K, Okuma K, Kawai K, Koga H, Sugaya M.
JOURNAL OF DERMATOLOGY,, 48(2), e49-e71, Feb. 2021

Dermoscopic diagnostic performance of Japanese dermatologists for skin tumors differs by patient origin: A deep learning convolutional neural network closes the gap
Minagawa A, Koga H, Sano T, Matsunaga K, Teshima Y, Hamada A, Houjou Y, Okuyama R.
The Journal of Dermatology, 48(2), 232-236, Feb. 2021

Dermoscopy with near-ultraviolet light highlights the demarcation of melanin distribution in cutaneous melanoma
Sano T, Minagawa A, Suzuki R, Koga H, Okuyama R.
Journal of American Academy of Dermatology, 84(1), e23-e24, Jan. 2021

Automatic diagnosis of melanoma using hyperspectral data and GoogLeNet
Hirano G, Nemoto M, Kimura Y, Kiyohara Y, Koga H, Yamazaki N, Christensen G, Ingvar C, Nielsen K, Nakamura A, Sota T, Nagaoka T.
Skin Res Technol., 26(6), 891-897, Nov. 2020

Final analysis of a phase II study of nivolumab in combination with ipilimumab for unresectable chemotherapy-naive advanced melanoma
Namikawa K, Kiyohara Y, Takenouchi T, Uhara H, Uchi H, Yoshikawa S, Takatsuka S, Koga H, Wada N, Minami H, Hatsumichi M, Namba Y, Yamazaki N.
The Journal of Dermatology, 47(11), 1257-1266, Nov. 2020

Dermoscopy image-based self-learning on computer improves diagnostic performance of medical students compared with classroom-style lecture in ultra-short period
Minagawa A, Mikoshiba Y, Koga H, Okuyama R.
The Journal of Dermatology, 47(12), 1432-1435, Sep. 2020

Concordance and Discordance Rates of V-Raf Murine Sarcoma Viral Oncogene Homolog B1 ( BRAF) V600E Status in Metastatic against Primary Lesion of Melanoma: A Meta-analysis
Yokomichi H, Inozume T, Wada M, Asai J, Igaki H, Namikawa K, Hayashi A, Fukushima S, Fujimura T, Koga H, Nakamura Y, Mochizuki M, Yamagata Z.
The JMA Journal, 3(3), 274-279, Jul. 2020

Japanese Dermatological Association Guidelines: Outlines of guidelines for cutaneous melanoma 2019
Nakamura, Yasuhiro; Asai, Jun; Igaki, Hiroshi; Inozume, Takashi; Namikawa, Kcnjiro; Hayashi, Ayato; Fukushima, Satoshi; Fujimura, Taku; Ito, Takamichi; Imafuku, Keisuke; Tanaka, Ryota; Teramoto, Yukiko; Minagawa, Akane; Miyagawa, Takuya; Miyashita, Azusa; Wada, Makoto; Koga, Hiroshi; Sugaya, Makoto; Japanese Skin Canc Soc;
JOURNAL OF DERMATOLOGY, 47(2), 89-103, Feb. 2020

Japanese real-world study of sequential nivolumab and ipilimumab treament in melanoma
Tsutsumida, Arata; Fukushima, Satoshi; Yokota, Kenji; Yoshikawa, Shusuke; Yamasaki, Osamu; Tanemura, Atsushi; Okuyama, Ryuhei; Uhara, Hisashi; Muto, Yusuke; Miyashita, Azusa; Akiyama, Masashi; Kaji, Tatsuya; Koga, Hiroshi; Kato, Junji; Katayama, Teruaki; Itakura, Eijun; Yamazaki, Naoya; Kiyohara, Yoshio;
JOURNAL OF DERMATOLOGY, 46(11), 947-955, Nov. 2019

Clinical and Histopathologic Characteristics of Melanocytic Lesions on the Volar Skin Without Typical Dermoscopic Patterns
Mikoshiba, Yasutomo; Minagawa, Akane; Koga, Hiroshi; Yokokawa, Yoshiharu; Uhara, Hisashi; Okuyama, Ryuhei;
JAMA DERMATOLOGY, 155(5), 578-584, May 2019

Efficacy and safety of nivolumab in combination with ipilimumab in Japanese patients with advanced melanoma: An open-label, single-arm, multicentre phase II study.
Namikawa K, Kiyohara Y, Takenouchi T, Uhara H, Uchi H, Yoshikawa S, Takatsuka S, Koga H, Wada N, Minami H, Hatsumichi M, Asada S, Namba Y, Yamazaki N
Eur J Cancer., 105, 114-126, 01 Dec. 2018

Serum 5-S-cysteinyldopa behavior in the early phase of nivolumab treatment of 12 melanoma patients.
Omodaka T, Minagawa A, Uhara H, Wakamatsu K, Koizumi T, Yokokawa Y, Koga H, Okuyama R.
J Dermatol., 45(11), 1340-1344, 01 Nov. 2018

Efficacy and toxicity of ipilimumab used after nivolumab in patients with melanoma
Misato Sato, Hisashi Uhara, Hiroshi Koga, Ryuhei Okuyama
The Journal of Dermatology, 14 Apr. 2018

Nail apparatus melanoma thickness is associated with side and age.
Minagawa A, Omodaka T, Koga H, Yokokawa Y, Uhara H, Okuyama R.
Br J Dermatol., 177(3), e65-e66, 01 Sep. 2017

Serum 5-s-cysteinyldopa for identifying non-responders to nivolumab treatment of melanoma.
Toshikazu Omodaka, Akane Minagawa, Hisashi Uhara, Kazumasa Wakamatsu, Tomonobu Koizumi, Hiroshi Koga, Ryuhei Okuyama
Journal of Clinical Oncology/ASCO, 35(15_suppl), e21068-e21068, 20 May 2017

Dermoscopic evaluation of melanonychia
Hiroshi Koga
The Journal of Dermatology, 44(5), 515-517, 01 May 2017

Image Classification of Melanoma, Nevus and Seborrheic Keratosis by Deep Neural Network Ensemble
Kazuhisa Matsunaga, Akira Hamada, Akane Minagawa, Hiroshi Koga
arXiv preprint arXiv:1703.03108, 09 Mar. 2017

Long-term Follow-up of Longitudinal Melanonychia in Children and Adolescents Using an Objective Discrimination Index.
Koga H, Yoshikawa S, Shinohara T, Le Gal FA, Cortés B, Saida T, Sota T.
Acta Derm Venereol., 96(5), 716-717, 2016

Pigmented seborrheic keratosis showing starburst pattern.
Minagawa A, Tanaka M, Koga H, Okuyama R.
Journal of American Academy of Dermatology, 75(1), 332-335, 2016

Eccrine porocarcinoma shares dermoscopic characteristics with eccrine poroma: A report of three cases and review of the published work.
Edamitsu T, Minagawa A, Koga H, Uhara H, Okuyama R.
J Dermatol., 43(3), 332-335, 2016

Melanoma with BRAF Mutation in Circulating Cell-free DNA despite no Mutation in the Primary Lesion: A Case Report.
Ashida A, Uhara H, Mikoshiba A, Sakaizawa K, Kumagai N, Koga H, Okuyama R.
Acta Derm Venereol., 96(1), 128-129, 2016

Melanocytic Naevus Shows Parallel Ridge Pattern due to the Melanin Columns Under the Ridges.
Sano T, Minagawa A, Koga H, Uhara H, Okuyama R.
Acta Derm Venereol., 95(1), 1037-1039, Jan. 2015

Pigmented macule on the nipple.
Asai Y, Minagawa A, Koga H, Okuyama R.
Clin Exp Dermatol., 40(8), 938-940, 2015

Brown nodule on the lower eyelid: a quiz -- lichenoid keratosis.
Shirota S1 Minagawa A, Koga H, Momose M, Uhara H, Okuyama R.
Acta Derm Venereol.　, 95(8), 1037-1039, 2015

Modification of a melanoma discrimination index derived from hyperspectral data: a clinical trial conducted in 2 centers between March 2011 and December 2013.
Nagaoka T, Kiyohara Y, Koga H, Nakamura A, Saida T, Sota T.
Skin Res Technol. 　, 21(3), 278-283, 2015

Alteration of dermoscopic features in a juvenile xanthogranuloma during follow-up of 43 months.
Unno T, Minagawa A, Koga H, Uhara H, Okuyama R.
Int J Dermatol., 53(12), 590-591, Dec. 2014

Automated evaluation system of dermoscopic images of longitudinal melanonychia: Proposition of a discrimination index for detecting early nail apparatus melanoma.
Koga H, Yoshikawa S, Sekiguchi A, Fujii J, Saida T, Sota T.
J Dermatol., 41, 867-71, Oct. 2014

Histopathological correlation to the dermoscopic feature of "string of pearls" in clear cell acanthoma.
Miyake T, Minagawa A, Koga H, Fukuzawa M, Okuyama R.
Eur J Dermatol., 24, 498-9, Aug. 2014

Vascular structure absence under dermoscopy in two cases of angiosarcoma on the scalp.
Minagawa A, Koga H, Okuyama R.
Int J Dermatol., 53, e350-2, Jul. 2014

Generalised acanthosis nigricans in childhood with short stature associated with poor response to growth hormone provocation.
Iwade M, Ogawa E, Koga H, Mizuno F, Koike K, Matsumoto K, Okuyama R.
Acta Derm Venereol., 94, 486-7, Jul. 2014

NRAS mutations in primary and metastatic melanomas of Japanese patients.
Uhara H, Ashida A, Koga H, Ogawa E, Uchiyama A, Uchiyama R, Hayashi K, Kiniwa Y, Okuyama R.
Int J Clin Oncol., 19, 544-8., Jun. 2014

Palmar and plantar melanomas differ for sex prevalence and tumor thickness but not for dermoscopic patterns.
Lallas A, Sgouros D, Zalaudek I, Tanaka M, Saida T, Thomas L, Kittler H, Kobayashi K, Koga H, Phan A, Longo C, Moscarella E, Katoulis A, Argenziano G.
Melanoma Res., 24, 83-7, Feb. 2014

Successful treatment of rheumatoid vasculitis-associated skin ulcer with a TNF-α antagonist.
Ashida A, Murata H, Mikoshiba Y, Ohashi A, Kobayashi A, Koga H, Uhara H, Okuyama R.
Int J Dermatol., 53, 154-6, Feb. 2014

5-Hydroxymethylcytosine as a useful marker to differentiate between malignant melanomas and benign melanocytic nevi.
Uchiyama R, Uhara H, Uchiyama A, Ogawa E, Takazawa Y, Ashida A, Koga H, Hayashi K, Kiniwa Y, Okuyama R.
J Dermatol Sci., 73, 161-3., Feb. 2014

Usefulness of high-frequency sonography for the diagnosis of asymptomatic myopathy in Löfgren's syndrome.
Ohashi A, Koga H, Hayashi K, Uhara H, Okuyama R.
Int J Dermatol., Jan, 62-3, Jan. 2014

Dermoscopic characteristics of acquired melanocytic naevus in childhood affecting the acral region.
Minagawa A, Koga H, Uhara H, Okuyama R.
Acta Derm Venereol., 93, 751-2, Nov. 2013

Age-related prevalence of dermoscopic patterns in acquired melanocytic nevus on acral volar skin.
Minagawa A, Koga H, Uhara H, Yokokawa Y, Okuyama R.
JAMA Dermatol., 149, 989-90, 2013

Hyperspectroscopic screening of melanoma on acral volar skin.
Nagaoka T, Nakamura A, Okutani H, Kiyohara Y, Koga H, Saida T, Sota T.
Skin Res Technol., 19, e290-6, 2013

Accuracy in melanoma detection: a 10-year multicenter survey.
Argenziano G, Cerroni L, Zalaudek I, Staibano S, Hofmann-Wellenhof R, Arpaia N, Bakos RM, Balme B, Bandic J, Bandelloni R, Brunasso AM, Cabo H, Calcara DA, Carlos-Ortega B, Carvalho AC, Casas G, Dong H, Ferrara G, Filotico R, Gómez G, Halpern A, Ilardi G, Ishiko A, Kandiloglu G, Kawasaki H, Kobayashi K, Koga H, Kovalyshyn I, Langford D, Liu X, Marghoob AA, Mascolo M, Massone C, Mazzoni L, Menzies S, Minagawa A, Nugnes L, Ozdemir F, Pellacani G, Seidenari S, Siamas K, Stanganelli I, Stoecker WV, Tanaka M, Thomas L, Tschandl P, Kittler H.
J Am Acad Dermatol., 67, 54-9, 2012

Melanoma: new neoplasm staging system by AJCC (2009) and current status of treatment].
Koga H.
Gan To Kagaku Ryoho., 38, 546-8., Apr. 2011

Revised 3-step dermoscopic algorithm for the management of acral melanocytic lesions.
Koga H, Saida T.
Arch Dermatol., 147, 741-743, 2011

Dermoscopic characteristics of congenital melanocytic nevi affecting acral volar skin.
Minagawa A, Koga H, Saida T.
Arch Dermatol, 147, 809-813, 2011

Characteristic distribution of melanin columns in the cornified layer of acquired acral nevus: an important clue for histopathologic differentiation from early acral melanoma.
Saida T, Koga H, Goto Y, Uhara H.
Am J Dermatopathol., 33, 546-548, 2011

Key pointsin dermoscopic differentiation between early acral melanoma and acral nevus.
Saida T, Koga H, Uhara H.
J Dermatol., 38, 25-34, 2011

Key point in dermoscopic differentiation between early nail apparatus melanoma and benign longitudinal melanonychia.
Koga H, Saida T, Uhara H.
J Dermatol., 38, 45-52, 2011

Dermoscopic features of nonpigmented eccrine poromas in association with their histopathological features.
Minagawa A, Koga H, Takahashi M, Sano K, Okuyama R.
Br J Dermatol., 163, 1264-1268, 2010

Dermoscopy of pigmented poromas.
Minagawa A, Koga H.
Dermatology., 221, 1264-1268, 2010

Dermoscopy of white fibrous papulosis of the neck.
Minagawa A, Koga H, Saida T.
Arch Dermatol., 146, 220, 2010

High-frequency 30-MHz sonography in preoperative assessment of tumor thickness of primary melanoma: usefulness in determination of surgical margin and indication for sentinel lymph node biopsy.
Hayashi K, Koga H, Uhara H, Saida T.
Int J Clin Oncol., 14, 426-430, 2009

Dermoscopy of pigmented lesions on mucocutaneous junction and mucous membrane.
Lin J, Koga H, Takata M, Saida T.
Br J Dermatol., 161, 1255-1261, 2009