scholarly journals A case report of total skin photon radiation therapy for cutaneous epitheliotropic lymphoma in a dog

2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Michael A. Deveau ◽  
Megan Sutton ◽  
Courtney Baetge ◽  
Alison B. Diesel
Keyword(s):  
Veterinary Medicine ◽  
Radiation Therapy ◽  
Treatment Time ◽  
Treatment Interruption ◽  
Photon Radiation ◽  
Beam Radiation ◽  
Palliative Intent ◽  
Time Commitment ◽  
Cutaneous Lymphomas ◽  
Grade 3

Abstract Background Total skin electron beam radiation therapy (TSEBT) is an effective treatment for primary diffuse cutaneous lymphomas in humans. While several techniques exist, they all require significant commitment of staff time and resources. In veterinary medicine, canine-specific techniques and strategies have been adapted and delivered but deemed not “realistically” clinically implementable given the time commitment of over 2.5 h plus per fraction or have been relegated to palliative intent. Leveraging these technologies of helical tomotherapy and 3D printing, we developed and clinically implemented a radiotherapeutic treatment strategy for the management of medically refractory diffuse cutaneous lymphoma in the dog. Case presentation A 13.5-year-old female spayed Bichon Frise presented to the Oncology service at Texas A&M University, College of Veterinary Medicine due to the progression of diffuse cutaneous epitheliotropic lymphoma (CEL) that had failed medical management. Twenty-seven gray were delivered to the patient with a treatment time requirement under 40 min including real time monitoring of anesthesia during setup and treatment. A partial response was noticeable after four fractions and the tumor completely regressed progressively over the entire treated area by the end of therapy. A grade 1 lethargy, fatigue, weight loss, and oral mucositis and grade 2 alopecia, nail/claw changes, pruritus, scaling, anorexia, and diarrhea were noted during treatment. Additionally, a grade 3 thrombocytopenia developed after fraction eight requiring a treatment interruption of 6 weeks and prescription modification prior to treatment continuation and completion. From the beginning of total skin photon radiation therapy (TSPT) treatment until the time of the patient was euthanized unrelated to cutaneous epitheliotropic lymphoma (123 days), only one new lesion on the head was identified and confirmed by histopathology within the treated fields. Conclusions The proposed technique is an acceptable alternative to TSEBT that is actually clinically implementable within a palliative or definitive setting and clinical constraints, however further testing and refinement is needed to reduce hematological complications and to confirm and expand on preliminary findings.

Preoperative Paclitaxel and Concurrent Rapid-Fractionation Radiation for Resectable Pancreatic Adenocarcinoma: Toxicities, Histologic Response Rates, and Event-Free Outcome

2002 ◽  
Vol 20 (10) ◽  
pp. 2537-2544 ◽  
Author(s):  
Peter W. T. Pisters ◽  
Robert A. Wolff ◽  
Nora A. Janjan ◽  
Karen R. Cleary ◽  
Chusilp Charnsangavej ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Pancreatic Adenocarcinoma ◽  
External Beam Radiation Therapy ◽  
External Beam Radiation ◽  
Intraoperative Radiation Therapy ◽  
Preoperative Treatment ◽  
External Beam ◽  
Beam Radiation ◽  
Intraoperative Radiation ◽  
Grade 3

PURPOSE: To evaluate the toxicity of a preoperative regimen of paclitaxel and concurrent external-beam radiation therapy, pancreaticoduodenectomy, and electron-beam intraoperative radiation therapy (EB-IORT) for patients with resectable pancreatic adenocarcinoma. PATIENTS AND METHODS: Patients with localized, potentially resectable pancreatic adenocarcinoma were treated with 30 Gy external-beam radiation therapy and concomitant weekly 3-hour infusions of paclitaxel (60 mg/m2). Radiographic restaging was performed 4 to 6 weeks after chemoradiation, and patients with localized disease underwent pancreatectomy with EB-IORT. RESULTS: Thirty-five patients completed chemoradiation; 16 (46%) experienced grade 3 toxicity. Four patients (11%) required hospitalization for dehydration due to grade 3 nausea and vomiting. Twenty (80%) of 25 patients who underwent surgery underwent pancreatectomy; EB-IORT was used in 13 patients. There were no histologic complete responses to preoperative therapy; 21% of specimens demonstrated more than 50% nonviable cells (grade 2b treatment effect). With a median follow-up period of 46 months, the 3-year overall survival rate with chemoradiation and pancreatectomy was 28%. CONCLUSION: Preoperative paclitaxel-based concurrent chemoradiation is feasible. The toxicity of this regimen seems greater than that with fluorouracil. The histologic responses and survival are similar, suggesting no advantages to paclitaxel-based preoperative treatment.

scholarly journals Comparing Intelligence Quotient Change After Treatment With Proton Versus Photon Radiation Therapy for Pediatric Brain Tumors

2016 ◽  
Vol 34 (10) ◽  
pp. 1043-1049 ◽  
Author(s):  
Lisa S. Kahalley ◽  
M. Douglas Ris ◽  
David R. Grosshans ◽  
M. Fatih Okcu ◽  
Arnold C. Paulino ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Brain Tumors ◽  
Intelligence Quotient ◽  
Pediatric Brain Tumors ◽  
Photon Radiation ◽  
Beam Radiation ◽  
Normal Tissues ◽  
Iq Scores ◽  
Pediatric Brain ◽  
Over Time

Purpose Compared with photon radiation (XRT), proton beam radiation therapy (PBRT) reduces dose to normal tissues, which may lead to better neurocognitive outcomes. We compared change in intelligence quotient (IQ) over time in pediatric patients with brain tumors treated with PBRT versus XRT. Patients and Methods IQ scores were available for 150 patients (60 had received XRT, 90 had received PBRT). Linear mixed models examined change in IQ over time since radiation therapy (RT) by RT group, controlling for demographic/clinical characteristics. Craniospinal and focal RT subgroups were also examined. Results In the PBRT group, no change in IQ over time was identified (P = .130), whereas in the XRT group, IQ declined by 1.1 points per year (P = .004). IQ slopes did not differ between groups (P = .509). IQ was lower in the XRT group (by 8.7 points) versus the PBRT group (P = .011). In the craniospinal subgroup, IQ remained stable in both the PBRT (P = .203) and XRT groups (P = .060), and IQ slopes did not differ (P = .890). IQ was lower in the XRT group (by 12.5 points) versus the PBRT group (P = .004). In the focal subgroup, IQ scores remained stable in the PBRT group (P = .401) but declined significantly in the XRT group by 1.57 points per year (P = .026). IQ slopes did not differ between groups (P = .342). Conclusion PBRT was not associated with IQ decline or impairment, yet IQ slopes did not differ between the PBRT and XRT groups. It remains unclear if PBRT results in clinically meaningful cognitive sparing that significantly exceeds that of modern XRT protocols. Additional long-term data are needed to fully understand the neurocognitive impact of PBRT in survivors of pediatric brain tumors.

A phase II trial of radiation and cetuximab followed by irinotecan/cetuximab for children with newly diagnosed diffuse pontine tumors and high-grade astrocytomas.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 10030-10030 ◽  
Author(s):  
Margaret Macy ◽  
Mark W. Kieran ◽  
Susan N. Chi ◽  
Kenneth J. Cohen ◽  
Tobey MacDonald ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Phase 1 ◽  
Progression Free Survival ◽  
External Beam Radiation ◽  
High Grade ◽  
Newly Diagnosed ◽  
Beam Radiation ◽  
Phase 2 Trial ◽  
Correlative Studies ◽  
Grade 3

10030 Background: Diffuse intrinsic pontine gliomas (DIPG) and high-grade astrocytomas (HGA) have dismal prognoses. We previously demonstrated in a phase 1 study that cetuximab and irinotecan was a safe and tolerable regimen. Consequently, we initiated this 2-strata phase 2 trial to investigate the safety and efficacy of weekly cetuximab given with involved field external beam radiation therapy followed by 10 cycles of cetuximab and irinotecan for DIPG and HGA as determined by the 1-year progression-free survival. Methods: Eligible patients aged 3-21 years with newly diagnosed HGA or DIPG were enrolled to parallel strata. All patients received radiation therapy (5940 cGy) with concurrent cetuximab at 250mg/m2 IV weekly for 6 weeks. Following radiation, patients received cetuximab (250mg/m2 IV) weekly and irinotecan (16mg/m2/day IV) daily x 5 for two weeks every 21 days for 30 weeks. Tumor, serum, and CSF samples were collected for correlative studies. Sera collected at the onset of rash were analyzed for inflammatory and immune-related cytokines. Results: Forty-eight patients (27 DIPG, 21 HGA) were enrolled and 45 were treated (median age 8 years; range: 3–19). Toxicities were manageable; the most common adverse events were fatigue, gastrointestinal complaints, neutropenia, rash, headache, electrolyte abnormalities, elevated ALT/AST, and fever. Grade 3-4 events in ≥10% of patients were hypokalemia and lymphopenia. 4 patients experienced cetuximab-related hypersensitivity reactions (2 grade 3 reactions). The median PFS was 9.5 months (95% CI: 7.0-12.2) for HGA and 7.8 months (7.0-8.6) for DIPG with a 1-year PFS±SE of 24±10% and 25%±10% respectively. The median OS for HGA was 17.7 months (95% CI: 14.1-18.0) and 11.5 months (8.8-14.2) for DIPG. Biological correlative studies will be presented. Conclusions: Cetuximab and radiation therapy followed by cetuximab and irinotecan is well tolerated in children. Based on the 1-year PFS, this regimen may deserve further investigation in patients with DIPG. Biological correlative studies will delineate the mechanisms of the rash and possible implications for EGFR-targeted therapeutics in such patients. Clinical trial information: NCT01012609.

Phase I/II Study of Preoperative Oxaliplatin, Fluorouracil, and External-Beam Radiation Therapy in Patients With Locally Advanced Rectal Cancer: Cancer and Leukemia Group B 89901

2006 ◽  
Vol 24 (16) ◽  
pp. 2557-2562 ◽  
Author(s):  
David P. Ryan ◽  
Donna Niedzwiecki ◽  
Donna Hollis ◽  
Brent E. Mediema ◽  
Scott Wadler ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Phase I ◽  
Continuous Infusion ◽  
Locally Advanced ◽  
Pathologic Complete Response ◽  
Rectal Adenocarcinoma ◽  
External Beam Radiation ◽  
Beam Radiation ◽  
Grade 3 ◽  
Experienced Grade

Purpose The addition of oxaliplatin to fluorouracil in patients with advanced colorectal cancer improves survival. This phase I/II study evaluated the addition of weekly oxaliplatin to preoperative continuous infusion fluorouracil (FU) and external-beam radiation therapy (RT) in patients with locally advanced rectal adenocarcinoma. Patients and Methods Patients with clinical T3/T4 rectal adenocarcinoma and no evidence of metastases were treated with weekly oxaliplatin, continuous infusion FU 200 mg/m2 intravenously, and RT. A total of 6 weekly doses of oxaliplatin were planned. RT dose was 1.8 Gy/fraction to a total dose of 50.4 Gy. In the phase I portion, oxaliplatin was escalated from 30 to 60 mg/m2. Results Forty-four patients were entered onto the study, 18 on the phase I portion and 26 on the phase II portion. The maximum-tolerated dose (MTD) for oxaliplatin was determined to be 60 mg/m2. At the MTD, 12 patients experienced grade 3 or 4 diarrhea, two patients experienced grade 3 neutropenia, and one patient experienced grade 3 thrombocytopenia. Fifty-six percent of patients entered at the MTD completed all 6 weeks of oxaliplatin. Eight (25%) of 32 patients enrolled at the phase II dose experienced a pathologic complete response. Conclusion In this multicenter study, the addition of oxaliplatin to intravenous continuous infusion FU and RT for patients with locally advanced rectal cancer was associated with a high pathologic complete response rate but more toxicity than when FU is used alone. A regimen of weekly oxaliplatin, continuous infusion FU, and radiation therapy is now being evaluated by the National Surgical Adjuvant Breast and Bowel Project.

CONVECTION-ENHANCED DELIVERY OF CINTREDEKIN BESUDOTOX (INTERLEUKIN-13-PE38QQR) FOLLOWED BY RADIATION THERAPY WITH AND WITHOUT TEMOZOLOMIDE IN NEWLY DIAGNOSED MALIGNANT GLIOMAS

Neurosurgery ◽  
2007 ◽  
Vol 61 (5) ◽  
pp. 1031-1038 ◽  
Author(s):  
Michael A. Vogelbaum ◽  
John H. Sampson ◽  
Sandeep Kunwar ◽  
Susan M. Chang ◽  
Mark Shaffrey ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Malignant Gliomas ◽  
External Beam Radiation ◽  
Newly Diagnosed ◽  
Convection Enhanced Delivery ◽  
Beam Radiation ◽  
Interleukin 13 ◽  
Grade 3 ◽  
Dose Limiting Toxicity ◽  
Final Cohort

Abstract OBJECTIVE Cintredekin besudotox (CB), a recombinant cytotoxin consisting of interleukin-13 and truncated Pseudomonas exotoxin, binds selectively to interleukin-13Rα2 receptors overexpressed by malignant gliomas. This study assessed the safety of CB administered by convection-enhanced delivery followed by standard external beam radiation therapy (EBRT) with or without temozolomide (Temodar; Schering-Plough, Kenilworth, NJ) in patients with newly diagnosed malignant gliomas. METHODS After gross total resection of the tumor, two to four intraparenchymal catheters were stereotactically placed and CB (0.25 or 0.5 μg/mL) was infused for 96 hours. This was followed, 10 to 14 days later, by EBRT (5940–6100 cGy, 5 d/wk for 6–7 wk) with or without temozolomide (75 mg/m2/d, 7 d/wk during EBRT). Safety was assessed during an 11-week observation period after catheter placement RESULTS Twenty-two patients (12 men, 10 women; median age, 55 yr; 21 with glioblastoma multiforme and one with an anaplastic mixed oligoastrocytoma) were enrolled. None of the patients experienced dose-limiting toxicities in the first two cohorts (0.25 μg/mL CB + EBRT [n = 3] and 0.25 μg/mL CB + EBRT + temozolomide [n = 3]). One patient experienced a dose-limiting toxicity (Grade 4 seizure) in the third cohort (0.5 μg/mL CB + EBRT [n = 6]). Six patients in the final cohort (0.5 μg/mL CB + EBRT + temozolomide [n = 10]) completed treatment, and one patient experienced a dose-limiting toxicity (Grade 3 aphasia and confusion). Four patients were not considered evaluable for a dose decision and were replaced. CB related adverse events occurring in more than one patient were fatigue, gait disturbance, nystagmus, and confusion. No Grade 3 to 4 hematological toxicities were observed. CONCLUSION CB (0.5 μg/mL) administered via convection-enhanced delivery before standard radiochemotherapy seems to be well tolerated in adults with newly diagnosed malignant gliomas. Further clinical study assessment is warranted.

Acute toxicity of concomitant boost radiation therapy by volumetric-modulated arc therapy in head and neck cancers

2017 ◽  
Vol 16 (4) ◽  
pp. 423-430
Author(s):  
Kannan Perisamy ◽  
Ashutosh Mukherji ◽  
Saravanan Kandasamy ◽  
K. Sathyanarayan Reddy
Keyword(s):  
Radiation Therapy ◽  
Treatment Time ◽  
Radiation Therapy Oncology Group ◽  
Volumetric Modulated Arc Therapy ◽  
Concurrent Chemotherapy ◽  
Large Field ◽  
Concomitant Boost ◽  
Arc Therapy ◽  
Grade 3 ◽  
Boost Radiation

AbstractIntroductionVolumetric-modulated arc therapy (VMAT) is an advanced form of intensity-modulated radiation therapy that reduces treatment time without compromising plan quality. This study assessed acute toxicities in patients having carcinomas of oropharynx, larynx and hypopharynx treated with concomitant boost radiation therapy by VMAT.Materials and methodsIn this study, 30 patients of stages II–IVA disease were treated with concomitant boost radiation therapy using VMAT and those with stages III and IV also received concurrent chemotherapy with cisplatin 100 mg/m2 weekly thrice for two cycles. The total dose was 68·4 Gy/40 fractions/5.5 weeks (1·8 Gy/fraction/day to the large field for 28 fractions +1·5 Gy/fraction/day to boost field for the last 12 days of treatment). Radiation Therapy Oncology Group acute radiation morbidity scoring criteria was used to grade acute effects.ResultsAll patients completed scheduled treatment with median duration of 44 days. No grade 4 skin and mucosal toxicities were observed; grade 3 skin and mucosal toxicities seen in six (20%) and eight (26·67%) patients, respectively; grade 3 dysphagia and laryngeal toxicity in eight (26·67%) and three (10%) patients, respectively; two patients had grade 4 laryngeal toxicity. No grade 3 or grade 4 haematological toxicities were seen.ConclusionVMAT-based concomitant boost radiation therapy allows for dose escalation with good patient tolerance by limiting acute toxicities.

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