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Radiation Oncology Journal

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https://www.readbyqxmd.com/read/29627970/merkel-cell-carcinoma-in-the-community-setting-a-case-report
#1
Cameron M Callaghan, Rumpa Amornmarn
Merkel cell carcinoma (MCC) is a rare neuroendocrine tumor of the skin initially believed to arise from the Merkel cells. In the community setting a general radiation oncologist may only encounter this pathology in a handful of cases over the course of their career. Due to the low incidence of this malignancy, few prospective randomized controlled trials have ever been conducted and therefore guidelines are based on relatively lower levels of evidence upon which the clinical recommendations are made. We discuss the case of a female in her 90s presenting with a classic MCC primary lesion, as well as satellite lesions proximal to both the primary and the draining regional lymph nodes with no evidence of nodal involvement...
April 12, 2018: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29580046/initial-clinical-outcomes-of-proton-beam-radiotherapy-for-hepatocellular-carcinoma
#2
Jeong Il Yu, Gyu Sang Yoo, Sungkoo Cho, Sang Hoon Jung, Youngyih Han, Seyjoon Park, Boram Lee, Wonseok Kang, Dong Hyun Sinn, Yong-Han Paik, Geum-Youn Gwak, Moon Seok Choi, Joon Hyeok Lee, Kwang Cheol Koh, Seung Woon Paik, Hee Chul Park
Purpose: This study aimed to evaluate the initial outcomes of proton beam therapy (PBT) for hepatocellular carcinoma (HCC) in terms of tumor response and safety. Materials and Methods: HCC patients who were not indicated for standard curative local modalities and who were treated with PBT at Samsung Medical Center from January 2016 to February 2017 were enrolled. Toxicity was scored using the Common Terminology Criteria for Adverse Events (CTCAE) version 4.0. Tumor response was evaluated using modified Response Evaluation Criteria in Solid Tumors (mRECIST)...
March 29, 2018: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29621873/set-up-errors-in-head-and-neck-cancer-treated-with-imrt-technique-assessed-by-cone-beam-computed-tomography-a-feasible-protocol
#3
Durim Delishaj, Stefano Ursino, Francesco Pasqualetti, Fabrizio Matteucci, Agostino Cristaudo, Carlo Pietro Soatti, Amelia Barcellini, Fabiola Paiar
PURPOSE: To investigate set-up errors, suggest the adequate planning target volume (PTV) margin and image-guided radiotherapy frequency in head and neck (H&N) cancer treated with intensity-modulated radiotherapy (IMRT) assessed by kV cone-beam computed tomography (CBCT). METHODS: We analyzed 360 CBCTs in 60 patients with H&N cancer treated with IMRT. The target delineation was contoured according to ICRU62. PTVs were generated by adding a 3-5 mm margin in all directions to the respective clinical target volumes...
March 2018: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29621872/dosimetric-comparison-of-imrt-versus-3dcrt-for-post-mastectomy-chest-wall-irradiation
#4
Kartick Rastogi, Shantanu Sharma, Shivani Gupta, Nikesh Agarwal, Sandeep Bhaskar, Sandeep Jain
PURPOSE: To compare the dose distribution of three-dimensional conformal radiation therapy (3DCRT) with intensity-modulated radiation therapy (IMRT) for post-mastectomy radiotherapy (PMRT) to left chest wall. MATERIALS AND METHODS: One hundred and seven patients were randomised for PMRT in 3DCRT group (n = 64) and IMRT group (n = 43). All patients received 50 Gy in 25 fractions. Planning target volume (PTV) parameters-Dnear-max (D2 ), Dnear-min (D98 ), Dmean , V95 , and V107 -homogeneity index (HI), and conformity index (CI) were compared...
March 2018: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29621871/impact-of-radiation-dose-on-concurrent-chemoradiotherapy-for-limited-stage-small-cell-lung-cancer
#5
Junhee Park, Min Kyu Kang
PURPOSE: To evaluate clinical outcomes according to radiation dose in patients with limited-stage small-cell lung cancer (LS-SCLC) treated with concurrent chemoradiotherapy (CCRT). MATERIALS AND METHODS: From January 2006 to December 2015, 38 patients with LS-SCLC were treated with CCRT with etoposide and cisplatin. Total radiation doses ranged from 45 Gy to 66 Gy (1.8-2 Gy/fraction) and were classified into three groups: 45-54 Gy, 60-63 Gy, and 66 Gy. The impact of radiation dose on survival outcomes were evaluated...
March 2018: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29621870/preoperative-short-course-radiotherapy-with-concurrent-and-consolidation-chemotherapies-followed-by-delayed-surgery-in-locally-advanced-rectal-cancer-preliminary-results
#6
Mahdi Aghili, Sarvazad Sotoudeh, Reza Ghalehtaki, Mohammad Babaei, Borna Farazmand, Mohammad-Sadegh Fazeli, Amir Keshvari, Peiman Haddad, Farshid Farhan
PURPOSE: This study aimed to assess complications and outcomes of a new approach, that is, combining short course radiotherapy (SRT), concurrent and consolidative chemotherapies, and delayed surgery. MATERIALS AND METHODS: In this single arm phase II prospective clinical trial, patients with T3-4 or N+ M0 rectal adenocarcinoma were enrolled. Patients who received induction chemotherapy or previous pelvic radiotherapy were excluded. Study protocol consisted of three-dimensional conformal SRT (25 Gy in 5 fractions in 1 week) with concurrent and consolidation chemotherapies including capecitabine and oxaliplatin...
March 2018: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29621869/intensity-modulated-radiation-therapy-a-review-with-a-physics-perspective
#7
REVIEW
Byungchul Cho
Intensity-modulated radiation therapy (IMRT) has been considered the most successful development in radiation oncology since the introduction of computed tomography into treatment planning that enabled three-dimensional conformal radiotherapy in 1980s. More than three decades have passed since the concept of inverse planning was first introduced in 1982, and IMRT has become the most important and common modality in radiation therapy. This review will present developments in inverse IMRT treatment planning and IMRT delivery using multileaf collimators, along with the associated key concepts...
March 2018: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29506326/prognostic-significance-of-adjuvant-radiation-therapy-in-adenocarcinoma-of-the-cecum
#8
Sare Hosseini, Ali Mohammad Bananzadeh, Mohammad Mohammadianpanah, Roham Salek, Ali Taghizadeh-Kermani
PURPOSE: Local recurrence is a common failure pattern in adenocarcinoma of the cecum. This study aimed to investigate the potential role of adjuvant radiation therapy on oncologic outcomes of patients with adenocarcinoma of the cecum. MATERIALS AND METHODS: This retrospective study was carried out at three large tertiary university hospitals. We analyzed the characteristics, prognostic factors, and survival of 162 patients with adenocarcinoma of the cecum that were treated and followed up between 2000 and 2013...
March 2018: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29506325/the-impact-of-continuous-positive-airway-pressure-on-radiation-dose-to-heart-and-lung-during-left-sided-postmastectomy-radiotherapy-when-deep-inspiration-breath-hold-technique-is-not-applicable-a-case-report
#9
Whoon Jong Kil, Tabitha Pham, Sabbir Hossain, Juan Casaigne, Kellie Jones, Mohammad Khalil
Deep inspiration breathing hold (DIBH) compared to free-breathing (FB) during radiotherapy (RT) has significantly decreased radiation dose to heart and has been one of the techniques adopted for patients with breast cancer. However, patients who are unable to make suitable deep inspiration breath may not be eligible for DIBH, yet still need to spare the heart and lung during breast cancer RT (left-sided RT in particular). Continuous positive airway pressure (CPAP) is a positive airway pressure ventilator, which keeps the airways continuously open and subsequently inflates the thorax resembling thoracic changes from DIBH...
March 2018: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29262672/dosimetric-comparison-between-modulated-arc-therapy-and-static-intensity-modulated-radiotherapy-in-thoracic-esophageal-cancer-a-single-institutional-experience
#10
Kyu Hye Choi, Jina Kim, Sea-Won Lee, Young-Nam Kang, HongSeok Jang
Purpose: The objective of this study was to compare dosimetric characteristics of three-dimensional conformal radiotherapy (3D-CRT) and two types of intensity-modulated radiotherapy (IMRT) which are step-and-shoot intensity modulated radiotherapy (s-IMRT) and modulated arc therapy (mARC) for thoracic esophageal cancer and analyze whether IMRT could reduce organ-at-risk (OAR) dose. Materials and Methods: We performed 3D-CRT, s-IMRT, and mARC planning for ten patients with thoracic esophageal cancer...
December 23, 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29207866/interobserver-variation-in-target-volume-for-salvage-radiotherapy-in-recurrent-prostate-cancer-patients-after-radical-prostatectomy-using-ct-versus-combined-ct-and-mri-a-multicenter-study-krog-13-11
#11
Eonju Lee, Won Park, Sung Hwan Ahn, Jae Ho Cho, Jin Hee Kim, Kwan Ho Cho, Young Min Choi, Jae-Sung Kim, Jin Ho Kim, Hong-Seok Jang, Young-Seok Kim, Taek-Keun Nam
Purpose: To investigate interobserver variation in target volume delineations for prostate cancer salvage radiotherapy using planning computed tomography (CT) versus combined planning CT and magnetic resonance imaging (MRI). Materials and Methods: Ten radiation oncologists independently delineated a target volume on the planning CT scans of five cases with different pathological status after radical prostatectomy. Two weeks later, this was repeated with the addition of planning MRI...
December 15, 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29325396/treatment-results-of-radiotherapy-following-chop-or-r-chop-in-limited-stage-head-and-neck-diffuse-large-b-cell-lymphoma-a-single-institutional-experience
#12
Jae-Uk Jeong, Woong-Ki Chung, Taek-Keun Nam, Deok-Hwan Yang, Sung-Ja Ahn, Ju-Young Song, Mee Sun Yoon, Yong-Hyeob Kim
PURPOSE: This study evaluated outcomes of radiotherapy (RT) after chemotherapy in limited-stage head-and-neck diffuse large B-cell lymphoma (DLBCL). MATERIALS AND METHODS: Eighty patients who were treated for limited-stage head-and-neck DLBCL with CHOP (n = 43) or R-CHOP (n = 37), were analyzed. After chemotherapy, RT was administered to the extended field (n = 60) or the involved field (n = 16), or the involved site (n = 4). The median dose of RT ranged from 36 Gy in case of those with a complete response, to 45-60 Gy in those with a partial response...
December 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29325395/controversial-issues-in-radiotherapy-for-rectal-cancer-a-systematic-review
#13
REVIEW
Jong Hoon Kim
The role of radiotherapy (RT) as an adjuvant to surgical options in the treatment of locally advanced rectal cancer has been established as it reduces local recurrence when combined with surgical resection and enhances survival when used in multidisciplinary treatment. However, many issues need to be addressed; some of these can render RT unnecessary, whereas others can reveal a new role of RT in rectal cancer. This review will discuss not only the basic role of RT but also the associated but controversial issues in detail in an attempt to find answers and determine future directions for the next decade...
December 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29325394/correction-adverse-effect-of-excess-body-weight-on-survival-in-cervical-cancer-patients-after-surgery-and-radiotherapy
#14
Yunseon Choi, Ki Jung Ahn, Sung Kwang Park, Heunglae Cho, Ji Young Lee
[This corrects the article on p. 48 in vol. 35.].
December 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29262671/prophylactic-extended-field-irradiation-with-concurrent-chemotherapy-for-pelvic-lymph-node-positive-cervical-cancer
#15
Jinju Oh, Ki Ho Seol, Hyun Joo Lee, Youn Seok Choi, Ji Y Park, Jin Young Bae
PURPOSE: This study aimed to evaluate whether prophylactic extended-field pelvic radiotherapy (EF-PRT) yields better results than standard whole pelvic radiotherapy (WPRT) in patients with pelvic lymph node-positive cervical cancer treated with concurrent chemoradiotherapy (CCRT). MATERIALS AND METHODS: A total of 126 cases of stage IB-IVA cervical cancer that had pelvic lymph node involvement in magnetic resonance imaging and were treated with CCRT between 2000 and 2016 were reviewed...
December 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29249117/patterns-of-initial-failure-after-resection-for-gallbladder-cancer-implications-for-adjuvant-radiotherapy
#16
Tae Gyu Kim
PURPOSE: This study sought to identify potential candidates for adjuvant radiotherapy and patterns of regional failure in patients who underwent curative-intent surgery for gallbladder cancer. MATERIALS AND METHODS: Records for 70 patients with gallbladder cancer who underwent curative resection at a single institution between 2000 and 2016 were analysed retrospectively. No patients received adjuvant radiotherapy. Initial patterns of failure were evaluated. Regional recurrence was categorized according to the definitions of lymph node stations suggested by the Japanese Society of Hepato-Biliary-Pancreatic Surgery...
December 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29232805/value-of-imaging-study-in-predicting-pelvic-lymph-node-metastases-of-uterine-cervical-cancer
#17
Wonguen Jung, Kyung Ran Park, Kyung-Ja Lee, Kyubo Kim, Jihae Lee, Songmi Jeong, Yi-Jun Kim, Jiyoung Kim, Hai-Jeon Yoon, Byung-Chul Kang, Hae Soo Koo, Sun Hee Sung, Min-Sun Cho, Sanghui Park
PURPOSE: To evaluate the diagnostic accuracy of computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography/computed tomography (PET/CT) in predicting pelvic lymph node (LN) metastases in patients with cervical cancer. MATERIALS AND METHODS: From January 2009 to March 2015, 114 patients with FIGO stage IA1-IIB uterine cervical cancer who underwent hysterectomy with pelvic lymphadenectomy and took CT, MRI, and PET/CT before surgery were enrolled in this study...
December 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29232804/lymphovascular-invasion-as-a-negative-prognostic-factor-for-triple-negative-breast-cancer-after-surgery
#18
Ki Jung Ahn, Jisun Park, Yunseon Choi
PURPOSE: This study aimed to evaluate the prognostic effects of lymphovascular invasion (LVI) in triple-negative breast cancer (TNBC) patients who underwent surgical resection. MATERIALS AND METHODS: A total of 63 non-metastatic TNBC patients who underwent surgical resection were retrospectively investigated from 2007 to 2016 in Inje University Busan Paik Hospital. Pathological tests revealed that 12 patients (19.0%) had LVI. Approximately 61.9% (n = 39) of the patients' samples stained positive for p53...
December 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29207865/prognostic-value-of-nodal-suvmax-of-18f-fdg-pet-ct-in-nasopharyngeal-carcinoma-treated-with-intensity-modulated-radiotherapy
#19
So Jung Lee, Chul-Seoung Kay, Yeon-Sil Kim, Seok Hyun Son, Myungsoo Kim, Sea-Won Lee, Hye Jin Kang
PURPOSE: To investigate the predictive role of maximum standardized uptake value (SUVmax) of 2-[18F]fluoro-2-deoxy-D-glucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) in nasopharyngeal cancer patients treated with intensity-modulated radiotherapy (IMRT). MATERIALS AND METHODS: Between October 2006 and April 2016, 53 patients were treated with IMRT in two institutions and their PET/CT at the time of diagnosis was reviewed. The SUVmax of their nasopharyngeal lesions and metastatic lymph nodes (LN) was recorded...
December 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29207864/long-term-cosmesis-following-a-novel-schedule-of-accelerated-partial-breast-radiation-in-selected-early-stage-breast-cancer-result-of-a-prospective-clinical-trial
#20
Mutlay Sayan, Daphne Hard, Karen Wilson, Carl Nelson, Havaleh Gagne, Deborah Rubin, Ruth Heimann
PURPOSE: There is controversy regarding the cosmetic outcome after accelerated partial breast radiation (APBR). We report the cosmetic outcome from a single-arm prospective clinical trial of APBR delivered using intensity-modulated radiation therapy (IMRT) in elderly patients with stage I breast cancer (BC), using a novel fractionation schedule. MATERIALS AND METHODS: Forty-two patients aged ≥65, with Stage I BC who underwent breast-conserving surgery were enrolled in a phase I/II study evaluating a 2-week course of APBR...
December 2017: Radiation Oncology Journal
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