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2 results on '"Atsushi Komaru"'

1. Development and External Validation of a Nomogram Predicting the Probability of Significant Gleason Sum Upgrading among Japanese Patients with Localized Prostate Cancer

Author

Takashi Imamoto, Takanobu Utsumi, Makoto Takano, Atsushi Komaru, Satoshi Fukasawa, Takahito Suyama, Koji Kawamura, Naoto Kamiya, Junichiro Miura, Hiroyoshi Suzuki, Takeshi Ueda, and Tomohiko Ichikawa

Subjects
Diseases of the genitourinary system. Urology, RC870-923, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Objective. The aim of this study is to develop a prognostic model capable of predicting the probability of significant upgrading among Japanese patients. Methods. The study cohort comprised 508 men treated with RP, with available prostate-specific antigen levels, biopsy, and RP Gleason sum values. Clinical and pathological data from 258 patients were obtained from another Japanese institution for validation. Results. Significant Gleason sum upgrading was recorded in 92 patients (18.1%) at RP. The accuracy of the nomogram predicting the probability of significant Gleason sum upgrading between biopsy and RP specimens was 88.9%. Overall AUC was 0.872 when applied to the validation data set. Nomogram predictions of significant upgrading were within 7.5% of an ideal nomogram. Conclusions. Nearly one-fifth of Japanese patients with prostate cancer will be significantly upgraded. Our nomogram seems to provide considerably accurate predictions regardless of minor variations in pathological assessment when applied to Japanese patient populations.

Published
2011
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2. Development and External Validation of a Nomogram Predicting the Probability of Significant Gleason Sum Upgrading among Japanese Patients with Localized Prostate Cancer

Author

Koji Kawamura, Takanobu Utsumi, Takashi Imamoto, Naoto Kamiya, Makoto Takano, Takeshi Ueda, Tomohiko Ichikawa, Junichiro Miura, Takahito Suyama, Satoshi Fukasawa, Atsushi Komaru, and Hiroyoshi Suzuki

Subjects
Oncology, Cancer Research, medicine.medical_specialty, Article Subject, Urology, urologic and male genital diseases, lcsh:RC870-923, lcsh:RC254-282, Prostate cancer, Internal medicine, Biopsy, medicine, Gynecology, medicine.diagnostic_test, business.industry, Gleason Sum, External validation, Nomogram, medicine.disease, lcsh:Diseases of the genitourinary system. Urology, lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens, Cohort, Prognostic model, Clinical Study, business, Antigen levels
Abstract

Objective. The aim of this study is to develop a prognostic model capable of predicting the probability of significant upgrading among Japanese patients.Methods. The study cohort comprised 508 men treated with RP, with available prostate-specific antigen levels, biopsy, and RP Gleason sum values. Clinical and pathological data from 258 patients were obtained from another Japanese institution for validation.Results. Significant Gleason sum upgrading was recorded in 92 patients (18.1%) at RP. The accuracy of the nomogram predicting the probability of significant Gleason sum upgrading between biopsy and RP specimens was 88.9%. Overall AUC was 0.872 when applied to the validation data set. Nomogram predictions of significant upgrading were within 7.5% of an ideal nomogram.Conclusions. Nearly one-fifth of Japanese patients with prostate cancer will be significantly upgraded. Our nomogram seems to provide considerably accurate predictions regardless of minor variations in pathological assessment when applied to Japanese patient populations.

Published
2011

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