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Safe Resection (safe + resection)

Distribution by Scientific Domains

Medical Sciences	100%

Selected Abstracts

Endoscopic mucosal resection of colorectal tumors

DIGESTIVE ENDOSCOPY, Issue 1 2004
Yuji Inoue
It has been possible to resect early colorectal cancer by endoscopy due to the progress of colonoscopic diagnosis and technology. Therefore, most cases of colorectal mucosal cancer and benign tumor have been resected by endoscopy only. We report some techniques for endoscopic resection of colorectal tumors. The technique of endoscopic resection: (i) The B-Wave bipolar snare device: It is difficult to resect flat lesions that are not sufficiently elevated to be ligated by a usual snare. The snare of the B-Wave bipolar snare device is coated to prevent slipping on the colorectal mucosa. (ii) ,Sculpting down' polypectomy: It is difficult to resect large sessile lesions because the bases of these lesions cannot be well observed endoscopically. ,Sculpting down' polypectomy is a useful method for safe resection of such tumors. (iii) Endoscopic resection through a retroflexed scope: Under retroverted colonoscopic observation, submucosal injection and partial resection is performed. Then, under ordinary observation, complete resection of the residual tumor is performed. (iv) Endoscopic mucosal resection using a cap-fitted panendoscope (EMRC): EMRC is useful for lesions located in the lower rectum because there is no risk of free perforation. At first, submucosal injection is performed. The snare is set in the transparent cap and the lesion is aspirated into the cap. Then, it is snared and resected. [source]

Appling the abdominal aortic-balloon occluding combine with blood pressure sensor of dorsal artery of foot to control bleeding during the pelvic and sacrum tumors surgery

JOURNAL OF SURGICAL ONCOLOGY, Issue 7 2008
Liu Yang MD
Abstract Background and Objectives To investigate the feasibilities of reducing intraoperative hemorrhage and improving the safety of pelvic and sacrum tumor surgery using sizing balloon occluding abdominal aorta. Method From May 2001 to May 2007, 18 patients were diagnosed as sacrum or pelvic tumor and underwent surgery in our institution. Balloon catheters were placed via femoral artery to occlude the abdominal aorta of pelvic tumor and sacrum region undergoing the sacrum resection or half pelvis resection and replacement operation in 12 patients. A sizing balloon was used to occlude the abdominal aorta for 60 min in assisting with resection of pelvic and sacral tumors. Results After the abdominal aorta was occluded, much less intraoperative hemorrhage was found, and the average blood loss was only 280 ml (range 200,600 ml). This procedure assisted the surgeon in identifying clearly the surgical margin and neurovascular structure surrounded by the tumors. The blood pressure remained stable during the operation. And the function of the kidney, the pelvis organs and the lower extremities were normal. Conclusion Intraoperative abdominal aorta occluding may effectively control intraoperative hemorrhage, thus assisting the surgeon in the complete and safe resection of pelvic and sacrum tumors. J. Surg. Oncol. 2008;97:626,628. © 2008 Wiley-Liss, Inc. [source]

Maximally safe resection followed by hypofractionated re-irradiation for locally recurrent ependymoma in children

PEDIATRIC BLOOD & CANCER, Issue 7 2009
Arthur K. Liu MD
Abstract Background Treatment failure in children with ependymoma is relatively common, with the majority of events consisting of local failure. Salvage therapy for these children historically had poor results, with repeated local recurrences. To improve these outcomes, we began to offer hypofractionated re-irradiation after resection at first local recurrence. To minimize the duration of therapy, we chose a hypofractionated regimen that has been shown to be well tolerated in adult patients. Procedure We performed a review of the experience at the Children's Hospital in Denver and at the Department of Radiation Oncology at the University of Colorado Denver from 1995 to 2008 with hypofractionated re-irradiation after maximally safe resection in children with locally recurrent ependymoma. Results Six children with locally recurrent ependymoma were seen in that time period. After maximally safe resection, all six received hypofractionated radiation therapy of 24,30 Gy delivered in three fractions. With a median follow-up of 28 months from the time of re-irradiation, all six children are alive with no evidence of disease. Three children had evidence of radiation necrosis, either clinically or based on imaging, but none required significant intervention. Conclusions Hypofractionated re-irradiation after resection for locally recurrent ependymoma is well tolerated. This approach also appears to provide good local control. Additional follow-up is required to determine the efficacy and potential late effects of hypofractionated re-irradiation in this patient population. Pediatr Blood Cancer 2009;52:804,807. © 2009 Wiley-Liss, Inc. [source]