Publications by authors named "Robert McCammon"
Purpose: This study aimed to report our initial experience with weekly tele-video "virtual" on-treatment visits (vOTVs), describe the logistics of implementation, report the results of patient and physician surveys, and discuss the barriers, limitations, and benefits of vOTVs during the COVID-19 pandemic.
Methods And Materials: vOTVs were piloted at 2 centers and within 1 week were expanded to 4 additional centers. Patients participating in vOTVs were surveyed about their satisfaction with vOTVs, the quality of vOTVs, and confidence in their physician's ability to manage their care through vOTVs, as well as their support of and preferences related to vOTVs.
Objective: Preoperative stereotactic radiosurgery (SRS) is a feasible alternative to postoperative SRS and may lower the risk of radiation necrosis (RN) and leptomeningeal disease (LMD) recurrence. The study goal was to report the efficacy and toxicity of preoperative SRS in an expanded patient cohort with longer follow-up period relative to prior reports.
Methods: The records for patients with brain metastases treated with preoperative SRS and planned resection were reviewed.
Article Synopsis
- * A study assessed these nomograms' effectiveness using patient data from Levine Cancer Institute and Emory University, creating validation cohorts for each nomogram.
- * The findings indicated that both the Wake Forest and Canadian nomograms showed poor predictive ability in this new patient sample, highlighting the need for validation of predictive models outside their original studies.
Purpose: Stereotactic radiosurgery (SRS) dose is limited by brain metastasis (BM) size. The study goal was to retrospectively determine whether there is a benefit for intracranial outcomes and overall survival (OS) for gross total resection with single-fraction SRS versus SRS alone for patients with large BMs.
Methods And Materials: A large BM was defined as ≥4 cm (2 cm in diameter) prior to the study.
Background: A scoring system using pretreatment factors was recently published for predicting the risk of early (≤6 months) distant brain failure (DBF) and salvage whole brain radiation therapy (WBRT) after stereotactic radiosurgery (SRS) alone. Four risk factors were identified: (1) lack of prior WBRT; (2) melanoma or breast histologic features; (3) multiple brain metastases; and (4) total volume of brain metastases <1.3 cm, with each factor assigned 1 point.
View Article and Find Full Text PDFPurpose: Standard therapy for stage I and II diffuse large B-cell lymphoma consists of combined modality therapy with anthracycline-based chemotherapy, anti-CD20 antibody, and radiation therapy (RT). Curative approaches without RT typically utilize more intensive and/or protracted chemotherapy schedules. Anthracycline-based chemotherapy regimens are associated with a dose-dependent risk of left ventricular systolic dysfunction.
View Article and Find Full Text PDFPurpose: To evaluate the toxicity of pelvic intensity-modulated radiotherapy (IMRT) with hypofractionated simultaneous integrated boost (SIB) to the prostate for patients with intermediate- to high-risk prostate cancer.
Methods And Materials: A retrospective toxicity analysis was performed in 30 consecutive patients treated definitively with pelvic SIB-IMRT, all of whom also received androgen suppression. The IMRT plans were designed to deliver 70 Gy in 28 fractions (2.
Purpose: To describe the radiographic and histopathologic changes after stereotactic radiosurgery (SRS) and epidermal growth factor receptor inhibition in patients with recurrent malignant gliomas.
Methods And Materials: A total of 15 patients with recurrent high-grade gliomas were treated on a prospective Phase I trial combining SRS and gefitinib. The SRS dose was escalated from 18 to 36 Gy in three fractions.
Purpose: To determine prognostic factors for local control of primary or metastatic tumors within the lung or liver treated with stereotactic body radiation therapy (SBRT) within a single institution.
Methods And Materials: The records of 141 consecutive patients with 246 lesions treated with three-fraction SBRT from Oct 1999 through Aug 2005 were reviewed. Local control was assessed radiographically.
Background: Randomized trials provide evidence for improved outcomes with postmastectomy radiotherapy (PMRT) in high-risk patients. It has been suggested that patients with T3N0 breast cancer represent a favorable subgroup for which PMRT renders little benefit. In the current study, the authors used a United States population database to evaluate PMRT in this subgroup.
View Article and Find Full Text PDFPurpose: The role of neoadjuvant radiotherapy (NeoRT) before definitive surgery for esophageal cancer remains controversial. This study used a large population-based database to assess the effect of NeoRT on survival for patients treated with definitive surgery.
Methods And Materials: The overall survival (OS) and cause-specific survival for patients with Stage T2-T4, any N, M0 (cT2-T4M0) esophageal cancer who had undergone definitive surgery between 1998 and 2004 were analyzed by querying the Surveillance, Epidemiology, and End-Results database.
Purpose: To assess disease-specific survival (DSS), overall survival (OS), and the effect of radiotherapy (RT) in patients with localized diffuse large B-cell lymphoma (DLBCL).
Patients And Methods: The Surveillance, Epidemiology, and End Results database was queried for all patients diagnosed with Stage I, IE, II, or IIE DLBCL between 1988 and 2004. The analyzable data included gender, age, race, stage, presence of extranodal disease, and RT administration.