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固形癌に対する寛解導入化学療法

電子書籍販売価格(税込):
1,100

商品コード:
10682_13
著者:
田口 鐵男
出版社:
癌と化学療法社 出版社HP
発行:
2013年
ページ数:
5ペ-ジ
ファイル容量:
1.05MB


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閲覧可能台数:
3台(購入日より1年間ダウンロードが可能)


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内容紹介

Induction Chemotherapy for Solid Tumors

Summary
 Surgical treatment for solid malignancies, which is the gold standard for operable tumors, is being combined with nonsurgical modalities with an increasing frequency. Advanced cancers that are not curable by surgery alone are subjected to sophisticated multimodality regimens. Accordingly, the sequence and timing of integrated combined treatment modalities are essential.
 Traditionally, the common objective of induction chemotherapy has been to reduce the risk of distant disease recurrence. Administration of chemotherapy before other treatment has many theoretical advantages. Induction chemotherapy can result in tumor downstaging, thus increasing the rate of conservative surgery. In cases of more advanced disease, induction chemotherapy can render inoperable tumors resectable. Other advantages of induction chemotherapy include the ability to obtain information about tumor response, which can be used to study the biologic effects of chemotherapy and assess long-term disease-free survival(DFS)and overall survival(OS). Induction chemotherapy as a component of primary treatment has been shown in several studies and meta-analyses to decrease the incidence of metastatic disease.
 Currently, the terms induction, primary, preoperative, basal and neoadjuvant are all used to describe chemotherapy given as initial treatment. There are 2 methods of induction chemotherapy: intra-arterial induction chemotherapy and induction systemic chemotherapy. The clinical results of several trials of arterial infusion chemotherapy alone as induction chemotherapy for advanced cancer revealed that 20-30% higher response rates can be achieved. However, the benefits of prolonged survival rates and improved quality of life are not consistently realized. Induction arterial infusion chemotherapy did not gain enthusiastic support for several different malignancies.
 Induction systemic chemotherapy is mainly used in patients with stageⅡ/Ⅲ disease to improve surgical outcomes and increase the rate of breast-conserving surgery in the breast cancer case, although clinical studies have not revealed a significant improvement in DFS or OS. The favorable response rate and achievement of pathological complete response(pCR)have favorable effects on DFS in breast cancer patients. The available data suggest a minimal benefit for additional chemotherapy after surgery in patients with residual disease.
 New targets must be identified to develop non-cross-resistant agents for patients with residual disease after prior chemotherapy. New genomic and proteomic tools must be developed to identify predictive markers for response to primary systemic therapy that allow clinicians to develop more personalized therapy, new strategic options, and new biologic agents and avoid unnecessary regimens.
 The side effects of induction chemotherapy depend on the types of drugs, their doses, and the duration of treatment.

要旨
 いわゆる固形癌に対する基本的標準治療は切除術であるが,進行癌ではしばしば外科的手術のみでは治癒させることはできない。近年,進行固形癌に対して化学・放射線療法を加味した集学的治療が一般的になってきた。寛解導入化学療法(induction chemotherapy)の目的は,術前に化学療法によって原発性局在性の腫瘍の縮小を図って外科的手術を行いやすく,かつ根治的に切除できるようにすることであるが,進行癌の場合はdown stagingにもっていき切除可能とし,さらに化学・放射線療法などを追加することが考えられる。また,抗腫瘍効果の状況から次の治療戦略の構築に役立つであろう。
 induction chemotherapyに関しては,induction,primary,initial,basal,preoperative,そしてneoadjuvantなどが用いられているが,inductionが適当な用い方ではないだろうか。induction chemotherapyには大別してintra-arterial induction chemotherapyとsystemic induction chemotherapyとがある。

目次

癌と化学療法 TOPへ
癌と化学療法 40巻6号 2013年6月号トップへ

【総説】
▶固形癌に対する寛解導入化学療法…田口 鐵男
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