Abstract: Since observations from the beginning of the last century, it has become well established that solid tumors may contain oxygen-deficient hypoxic areas and that cells in such areas may cause tumors to become radioresistant. Identifying hypoxic cells in human...
Abstract: In esophageal cancer, the liver, lung, and bones are the most common sites of visceral metastases. Isolated chest wall metastases are quite extraordinary and occur very rarely. In February 2004, a 59-year-old male patient was admitted with esophageal...
Abstract: Tetrahydropyranyladriamycin (THP or pirarubicin) destroys tumors via several mechanisms; one of which involves the production of ROS that requires molecular oxygen for its generation. SMA forms stable self-assembled associated micelles with pirarubicin...
Malignant tumours often display hypoxic tissue areas where the oxygen tension is < 7 mm Hg. Studies in this field have proved that the hypoxic state boosts tumour progression and aggressive behaviour. In tissue culture experiments "in vitro" oxygenation was found to inhibit in itself the proliferation of cells of healthy tissues as well as benign and malignant tumours. It is a very important observation from oncotherapeutic point of view that in the presence of partial oxygen pressure < 2.5 mm Hg the radiosensitivity decreases (intrinsic radioresistance). Most of the anticancer drugs (cytostatics) are also ineffective in hypoxic tumours (chemoresistance).
Abstract: Osteoradionecrosis (ORN) is one of the most serious complications of radiotherapy of nasopharyngeal carcinoma (NPC). ORN rarely occurs in the external auditory canal. This is a retrospective review of 11 NPC patients who had ORN in the external auditory...
Abstract: Recently, jawbone osteonecrosis has been reported as a potential adverse effect of bisphosphonates administration. This paper considers and highlights histopathologic and radiologic features of this condition. Eleven patients, owing to unresponsiveness to...
Abstract: Late complications of pelvic radiotherapy occur in 5-20% of patients, particularly chronic radiation proctitis (CRP). Rectal bleeding is the most common symptom. Other symptoms include difficulty in defaecation or tenesmus because of loss of distensibility...
Abstract: The purpose of this study was to evaluate the immediate placement of implants and appliance using hyperbaric oxygenation on a 45-year-old male with a history of squamous cell carcinoma of the floor of the mouth. Five Nobel Biocare implants between the mental...
Abstract: We performed a retrospective chart review of a tertiary care medical center. Our objective was to report our experience with microvascular reconstruction in the head and neck in patients who presented with radiation-induced tissue damage. We will discuss the...
Abstract: Despite some theoretical concern about cancer-enhancing effects ofhyperbaric oxygen (HBO2) therapy, it is frequently administered to cancer patients. We evaluated the growth of murine breast cancer cells in the lung after hyperbaric oxygen treatment in an...
