AIM The aim of this study was to evaluate the effects of radiotherapy plus concurrent weekly cisplatin chemotherapy on the postoperative recurrence of mediastinal lymph node metastases in esophageal cancer patients. METHODS Ninety-eight patients were randomly enrolled to receive either three-dimensional conformal radiotherapy alone (group A) or concurrent chemoradiotherapy (group B). A radiat...

INTRODUCTION New surgical methods have enabled resection of previously in-operable tumours in the region of the parotid gland and ear. This has translated to deeper target volumes being treated with adjuvant radiotherapy. Due to the limitations of existing conformal techniques, alternative planning approaches are required to cover the target volume with appropriate sparing of adjacent critical ...

POLICY STATEMENT BlueCHiP for Medicare and Commercial Products: Breast Intensity-modulated radiotherapy (IMRT) may be considered medically necessary as a technique to deliver whole-breast irradiation in patients receiving treatment for left-sided breast cancer after breast conserving surgery, and for individuals with large breasts when treatment planning with 3-dimensional (3D) conformal result...

Meningiomas are commonly encountered as intracranial brain tumours, but extracranial meningiomas do occur although seen rarely. Here we present a case of extracranial meningioma presenting as a mass over the medial canthus of left eye and the glabella with extension into the left ethmoid sinuses, without any neurological symptoms or signs. The patient underwent surgical excision, plastic surgic...

In the paper the nilpotent conditions of BRST operator for new su-perconformal string model were found. This string includes anticom-mutation 2 − d fields additional to the standard Neveu-Schwarz super-conformal set which carry quark quantum numbers. In this case the superconformal symmetry is realized by a non-linear way. In the su-perconformal composite string new constraints for 1 and 1/2 co...

Objective: Recurrence rates of 40–60% after percutaneous radiotherapy or brachytherapy and 20–40% after prostatectomy are described. This review will discuss curative treatment options for salvage after primary therapy. Methods: Relevant information was identified through searches of published studies, abstracts from scientific meetings, and review articles. Results: Clinical experience in salv...

Radiation therapy has come a long way from treatment planning based on orthogonal radiographs with large margins around tumours. Advances in imaging and radiation planning software have led to three-dimensional conformal radiotherapy and, further, to intensity modulated radiotherapy (IMRT). IMRT permits sparing of normal tissues and hence dose-escalation to tumours. IMRT is the current standard...