Abstract:
BACKGROUND:To report on our primary experience with the placement of a hydrogel spacer following stereotactic body radiation therapy (SBRT) in low- and intermediate-risk prostate cancer patients and assess its impact on dosimetry as well as acute toxicity. METHODS:A total of 70 patients treated with SBRT (total dose of 36.25 Gy) in 5 fractions were included. Hydrogel spacers were inserted in 53 patients along with gold fiducial markers. For dosimetry, we trisected the rectum on the sagittal image of magnetic resonance imaging and defined it as the upper rectum (UR), middle rectum (MR), and lower rectum (LR). We compared the dose to each part of the rectum with and without hydrogel spacer using dose volume histograms. Genitourinary (GU) and gastrointestinal (GI) toxicity assessments were conducted until 6 months of follow-up visits. RESULTS:The median volume of the hydrogel spacer was 12.3 mL. Overall, the hydrogel spacer could significantly reduce the rectal dose in the middle-to-high-dose region (V20-V35). The rectum doses at the UR and MR were significantly lower in the spacer group in the middle to high dose region (V20-V35); the dose at the LR was significantly lower in the spacer group in the high-dose region (V30-V35). There was no grade ≥ 3 toxicity observed, but grade 2 toxicity of GU and GI occurred in 17.1% and 1.4% of the patients, respectively. CONCLUSION:Hydrogel spacers could contribute to rectal dose reduction, especially in high dose regions, by creating a prostate-rectum distance.
journal_name
Int J Clin Oncoljournal_title
International journal of clinical oncologyauthors
Kobayashi H,Eriguchi T,Tanaka T,Ogata T,Ishida M,Nakajima Y,Kumabe A,Kosugi Mdoi
10.1007/s10147-020-01855-ysubject
Has Abstractpub_date
2021-01-07 00:00:00eissn
1341-9625issn
1437-7772pii
10.1007/s10147-020-01855-ypub_type
杂志文章abstract:BACKGROUND:SmithKline Beecham synthesized camptothecin analogs and identified nogitecan hydrochloride (topotecan) with a broad spectrum of antitumor activity and less toxicity than camptothecin. Because preclinical and overseas clinical data indicated the antitumor effect of nogitecan hydrochloride with a 5-day repeat-...
journal_title:International journal of clinical oncology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1007/s101470200026
更新日期:2002-06-01 00:00:00
abstract:BACKGROUND:Zoledronic acid treatment reduces the incidence of skeletal-related events (SREs) in patients with bone metastases from breast, lung, and urologic cancers including prostate and renal cancer. The aim of this study was to evaluate the effect of zoledronic acid on SREs in patients with bone metastases from bla...
journal_title:International journal of clinical oncology
pub_type: 杂志文章,随机对照试验
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更新日期:2010-08-01 00:00:00
abstract::We report the case of a 65-year-old man with recurrent prostate cancer who presented with meningeal carcinomatosis. In September 2007, he had been diagnosed with mixed type small cell carcinoma and adenocarcinoma at clinical stage T4N1M1 (primary prostate tumor with multiple bone, liver, and lymph node metastases) and...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-008-0869-9
更新日期:2009-10-01 00:00:00
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journal_title:International journal of clinical oncology
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更新日期:2018-02-01 00:00:00
abstract::Prostate cancer is androgen-dependent, and hormone therapy, mainly achieved by androgen deprivation, has been one of the main treatment modalities in the clinical management of prostate cancer patients for more than six decades. In the 1980s, luteinizing hormone-releasing hormone agonists, which reduce testosterone to...
journal_title:International journal of clinical oncology
pub_type: 杂志文章,评审
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journal_title:International journal of clinical oncology
pub_type: 临床试验,杂志文章
doi:10.1007/s10147-003-0359-z
更新日期:2003-12-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to evaluate the early surgical outcomes of robot-assisted partial nephrectomy (RAPN) for small renal masses in a large Japanese multicenter series. METHODS:A total of 804 consecutive cases of RAPN were examined at 42 institutes between 2011 and 2016. Medical records for clinic...
journal_title:International journal of clinical oncology
pub_type: 杂志文章,多中心研究
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abstract::We present the case of a 62-year-old Japanese man whose histological diagnosis was adenoendocrine cell carcinoma of the gallbladder at autopsy, but whose antemortem diagnosis was squamous cell carcinoma. The patient was admitted to hospital with complaints of occasional vomiting and abdominal pain. Abdominal computed ...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
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更新日期:2009-04-01 00:00:00
abstract::Third-generation aromatase inhibitors and inactivators have earned their place in the treatment of metastatic breast cancer. The third-generation aromatase inactivator exemestane was found to be superior to megestrol acetate as second-line endocrine therapy in postmenopausal women, with respect to time to progression ...
journal_title:International journal of clinical oncology
pub_type: 杂志文章,评审
doi:10.1007/s101470200038
更新日期:2002-08-01 00:00:00
abstract:BACKGROUND:We conducted a multiinstitutional analysis to clarify the clinical significance of perioperative chemotherapy, in invasive bladder cancers in Japan, and to identify the patient subpopulations who could benefit from perioperative chemotherapy. METHODS:A total of 913 consecutive patients aged less than 80 yea...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-004-0474-5
更新日期:2005-04-01 00:00:00
abstract:PURPOSE:The purpose of our study was to evaluate the efficacy of a new combination antiemetic therapy consisting of palonosetron, aprepitant, and dexamethasone in gastric cancer patients undergoing chemotherapy with S-1 plus cisplatin. METHODS:This prospective, multi-institutional observational study assessed patient-...
journal_title:International journal of clinical oncology
pub_type: 杂志文章,多中心研究
doi:10.1007/s10147-015-0916-2
更新日期:2016-06-01 00:00:00
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journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-011-0357-5
更新日期:2013-02-01 00:00:00
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journal_title:International journal of clinical oncology
pub_type: 杂志文章,随机对照试验
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更新日期:2017-06-01 00:00:00
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journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-007-0685-7
更新日期:2007-12-01 00:00:00
abstract:BACKGROUND:The standard of care for treatment of localized muscle-invasive bladder cancer (MIBC) is radical cystectomy (RC). The patient's condition may affect management of MIBC, especially for elderly patients with more comorbid conditions and lower performance status. We retrospectively evaluated the association bet...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-015-0857-9
更新日期:2016-02-01 00:00:00
abstract:BACKGROUND:Obese women with estrogen receptor (ER)-positive breast cancer may experience worse disease-free and overall survival. We hypothesize that this observation is due to intrinsically aggressive disease and that obesity will be associated with higher histologic grade and Ki67. METHODS:A sequential cohort of wom...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-014-0712-4
更新日期:2015-04-01 00:00:00
abstract::Distant metastasis from colorectal carcinoma most often occurs in the liver and lungs. Metastasis to bones, adrenals, lymph nodes, brain, and skin has also been reported. Metastatic colorectal carcinoma to the testes is very uncommon. Even more uncommon is testicular metastasis from rectal carcinoma. Researchers throu...
journal_title:International journal of clinical oncology
pub_type: 杂志文章,评审
doi:10.1007/s10147-010-0140-z
更新日期:2011-06-01 00:00:00
abstract::Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors in the gastrointestinal tract. Recently, we found that GISTs expressed KIT, a receptor tyrosine kinase encoded by the protooncogene c-kit. We propose that GISTs may originate from interstitial cells of Cajal (ICCs), which are considered to ...
journal_title:International journal of clinical oncology
pub_type: 杂志文章,评审
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abstract:BACKGROUND:Irinotecan (CPT-11) and bolus 5-fluorouracil (5-FU)/leucovorin (LV) administered weekly for 4 weeks every 42 days (Saltz regimen) is active but substantially toxic in patients with metastatic colorectal cancer (CRC). The efficacy and toxicity of this regimen, however, have not been determined in Japanese pat...
journal_title:International journal of clinical oncology
pub_type: 临床试验,杂志文章
doi:10.1007/s10147-003-0371-3
更新日期:2004-04-01 00:00:00
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journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-014-0750-y
更新日期:2015-06-01 00:00:00
abstract:BACKGROUND:Total pharyngolaryngectomy (TPL) is a conventional and standard surgical method for locoregional control of advanced hypopharyngeal cancer (HPC). This study aimed to define the clinicopathological prognostic factors of TPL by evaluating our surgical experience of TPL in the treatment of HPCs. METHODS:We ret...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
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更新日期:2015-04-01 00:00:00
abstract:BACKGROUND:Compared to other esophageal cancers, clinical stage IA esophageal cancer generally has a good prognosis, although a subgroup of patients has a poor prognosis. Unfortunately, clinical diagnoses of invasion depth or lymph node metastasis are not always accurate, which make it difficult to identify patients wi...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
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更新日期:2020-04-01 00:00:00
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journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-015-0860-1
更新日期:2016-02-01 00:00:00
abstract:BACKGROUND:The aim of this study is to evaluate whether class III β-tubulin (TUBB3) expression could predict progression-free survival or overall survival in relapsed non-small cell lung cancer (NSCLC) patients treated with taxene-based chemotherapy. METHODS:Immunohistochemistal staining was used to examine the expres...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-012-0386-8
更新日期:2013-06-01 00:00:00
abstract::A 45-year-old woman with HER2(-)/HER1(-) breast cancer underwent radical mastectomy, followed by radiation and chemotherapy. However, her symptoms progressed rapidly owing to meningitis carcinomatosa and she was fitted with a urethral catheter. She also had difficulty in walking. However, immediately after treatment w...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-011-0195-5
更新日期:2011-12-01 00:00:00
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journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-010-0039-8
更新日期:2010-04-01 00:00:00
abstract:BACKGROUND:We proposed a novel treatment strategy, consisting of triweekly cisplatin plus dose-dense weekly paclitaxel before and after radical hysterectomy without adjuvant radiation therapy to treat locally advanced cervical cancer. However, cisplatin-related severe non-hematologic toxicities were frequent during thi...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-020-01787-7
更新日期:2021-01-01 00:00:00
abstract::A primary retroperitoneal mucinous cystadenocarcinoma (PRMC) is an extremely rare lesion. To date, only 49 cases have been reported. The presence of mural nodules in a PRMC may indicate a worse prognosis. We report the case of a 40-year-old Japanese woman with a PRMC with mural nodules. Microscopic examination reveale...
journal_title:International journal of clinical oncology
pub_type: 杂志文章
doi:10.1007/s10147-011-0313-4
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND:UFT is composed of tegafur, a prodrug of 5-fluorouracil, and uracil, at a fixed ratio of 1: 4. UFT is widely used with leucovorin as adjuvant chemotherapy in patients with colon cancer. As reported, UFT/leucovorin should not be taken simultaneously with food because a high fat content will reduce the systemi...
journal_title:International journal of clinical oncology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10147-009-0919-y
更新日期:2009-12-01 00:00:00