Edward Soffen

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PURPOSE Perirectal spacing, whereby biomaterials are placed between the prostate and rectum, shows promise in reducing rectal dose during prostate cancer radiation therapy. A prospective multicenter randomized controlled pivotal trial was performed to assess outcomes following absorbable spacer (SpaceOAR system) implantation. METHODS AND MATERIALS(More)
The clinical and pathologic characteristics of five patients with esophageal sarcomas are presented, including the only recorded esophageal Triton tumor (malignant schwannoma), the third recorded synovial sarcoma, two patients with carcinosarcoma, and one with leiomyosarcoma. All five patients were males who presented with dysphagia. Three tumors were in(More)
PURPOSE A presumed advantage of high dose rate gynecologic applicators is the fixed relationship maintained between applicator and anatomic structures during the brief exposure. However, it has never been demonstrated that movement of applicators during low dose rate procedures is significant. Therefore, we assessed the magnitude of changes in positioning(More)
BACKGROUND Major goals of concurrent radiation and chemotherapy in the treatment of esophageal cancer are the early restoration and long-term maintenance of swallowing function. The purpose of this study was to determine the impact of concurrent radiation and chemotherapy on swallowing function. METHODS Between September 1980 and September 1990, 120(More)
To evaluate the role of palliative radiotherapy for adrenal metastases, a retrospective review was performed on 16 patients treated between 1972 and 1988 for palliation of symptomatic adrenal metastases. The median patient age was 56 years. In 15 cases lung cancer was the primary site (7 adenocarcinomas, 3 squamous cell carcinomas, 3 large cell carcinomas,(More)
PURPOSE To determine the magnitude of patient positioning errors associated with six field conformal therapy for carcinoma of the prostate, and to assess the impact of alpha-cradle immobilization on these errors. METHODS AND MATERIALS The records of 22 patients, treated at two of the treatment facilities within our department, using computed(More)
The ability to improve existing standards of treating prostate cancer was investigated. To deliver a homogenous dose to the prostate with as little normal tissue margin as practical, seven patients with low volume carcinoma of the prostate were immobilized with alpha cradle body casts prior to using a CT-based 3D treatment planning system and beam's eye(More)
Patients with early prostate cancer have been definitively treated using our previously described technique of CT-based 3D treatment planning and beam's eye view techniques with patients immobilized in alpha cradle casts. An average of 14% bladder (range 6-31%) and 14% rectal (range 7-25%) volume receiving a given dose was eliminated using four conformally(More)
PURPOSE SpaceOAR, a Food and Drug Administration-approved hydrogel intended to create a rectal-prostate space, was evaluated in a single-blind phase III trial of image guided intensity modulated radiation therapy. A total of 222 men were randomized 2:1 to the spacer or control group and received 79.2 Gy in 1.8-Gy fractions to the prostate with or without(More)
PURPOSE Local recurrence (LR) of prostate cancer after external beam radiotherapy (EBRT) is a serious problem. Our purpose was to determine if reduced-dose salvage brachytherapy could achieve high rates of biochemical control with acceptable toxicity if combined with androgen deprivation therapy (ADT). METHODS AND MATERIALS Thirty-three consecutive(More)