Abstract
Preservation of the lower rectal sphincters has been the main concern of colorectal surgeons in an attempt to avoid colostomy. Various proposed procedures contradict the oncological principles of the operation`s radicality, especially pelvic lymphadenectomy. Prior knowledge of this space is therefore, an important factor in choosing the operative technique: radical (amputation), or conservative. The introduction of ultrasound, computed tomography and magnetic resonance imaging, have provided preoperative information about the anatomic nature of the region. The morphological and functional study supplied by lymphoscintigraphy of this space supplements the data furnished by the other imaging techniques. The objective of this prospective of this prospective study was threefold: to standardize lymphoscintigraphy, to differentiate patients with rectal cancer from those with other coloproctological diseases and to asses the lymphonodal involvement in the former by utilizing the anatomopathological and surgical correlation. The study included 60 patients with various coloproctological diseases seen on the Department of Gastroentorology, Hospital da Clinicas, University of Sao Paulo School of Medicine, from September 1990 to August 1993. Thirty were cases of rectal cancer and the remainder were other colorectal diseases. The method consisted of injecting 0.5 of a dextran solution market with radioactive technetium in the perineal region and obtaining
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Citation Formats
Silva, Jose Hyppolito da.
Pelvic lymphoscintigraphy: contribution to the preoperative staging of rectal cancer; Linfocintilografia pelvica. Contribuicao ao estadiamento pre-operatorio do cancer retal.
Brazil: N. p.,
1996.
Web.
Silva, Jose Hyppolito da.
Pelvic lymphoscintigraphy: contribution to the preoperative staging of rectal cancer; Linfocintilografia pelvica. Contribuicao ao estadiamento pre-operatorio do cancer retal.
Brazil.
Silva, Jose Hyppolito da.
1996.
"Pelvic lymphoscintigraphy: contribution to the preoperative staging of rectal cancer; Linfocintilografia pelvica. Contribuicao ao estadiamento pre-operatorio do cancer retal."
Brazil.
@misc{etde_322279,
title = {Pelvic lymphoscintigraphy: contribution to the preoperative staging of rectal cancer; Linfocintilografia pelvica. Contribuicao ao estadiamento pre-operatorio do cancer retal}
author = {Silva, Jose Hyppolito da}
abstractNote = {Preservation of the lower rectal sphincters has been the main concern of colorectal surgeons in an attempt to avoid colostomy. Various proposed procedures contradict the oncological principles of the operation`s radicality, especially pelvic lymphadenectomy. Prior knowledge of this space is therefore, an important factor in choosing the operative technique: radical (amputation), or conservative. The introduction of ultrasound, computed tomography and magnetic resonance imaging, have provided preoperative information about the anatomic nature of the region. The morphological and functional study supplied by lymphoscintigraphy of this space supplements the data furnished by the other imaging techniques. The objective of this prospective of this prospective study was threefold: to standardize lymphoscintigraphy, to differentiate patients with rectal cancer from those with other coloproctological diseases and to asses the lymphonodal involvement in the former by utilizing the anatomopathological and surgical correlation. The study included 60 patients with various coloproctological diseases seen on the Department of Gastroentorology, Hospital da Clinicas, University of Sao Paulo School of Medicine, from September 1990 to August 1993. Thirty were cases of rectal cancer and the remainder were other colorectal diseases. The method consisted of injecting 0.5 of a dextran solution market with radioactive technetium in the perineal region and obtaining images by a gamma camera. In the rectal cancer patients, the tracer progresses unilaterally or is absent; in the others, it is bilateral and symmetrical, although its progress may be slow. The statistical data demonstrated that in rectal cancer, lymphoscintigraphy asseses the nodal involvement approximaltely as that obtained by the sun of the anatomapathological and surgical findings. Based on the results, the following conclusioons were possible: lymphoscintigraphy is a standardized, painless and harmless test that can be performed in all cases; it differentiates patients with rectal cancer from those with other coloproctological diseases; it significantly assesses lymphonodal involvement preoperatively in reactal cancer; its sensitivity is 88.23%, specificity is 87.50%, the positive predictive value is 78.94%, the negative ptredictive value is 93.33% and accuracy is 87.75%. (author) 75 refs., 10 figs., 13 tabs.}
place = {Brazil}
year = {1996}
month = {Dec}
}
title = {Pelvic lymphoscintigraphy: contribution to the preoperative staging of rectal cancer; Linfocintilografia pelvica. Contribuicao ao estadiamento pre-operatorio do cancer retal}
author = {Silva, Jose Hyppolito da}
abstractNote = {Preservation of the lower rectal sphincters has been the main concern of colorectal surgeons in an attempt to avoid colostomy. Various proposed procedures contradict the oncological principles of the operation`s radicality, especially pelvic lymphadenectomy. Prior knowledge of this space is therefore, an important factor in choosing the operative technique: radical (amputation), or conservative. The introduction of ultrasound, computed tomography and magnetic resonance imaging, have provided preoperative information about the anatomic nature of the region. The morphological and functional study supplied by lymphoscintigraphy of this space supplements the data furnished by the other imaging techniques. The objective of this prospective of this prospective study was threefold: to standardize lymphoscintigraphy, to differentiate patients with rectal cancer from those with other coloproctological diseases and to asses the lymphonodal involvement in the former by utilizing the anatomopathological and surgical correlation. The study included 60 patients with various coloproctological diseases seen on the Department of Gastroentorology, Hospital da Clinicas, University of Sao Paulo School of Medicine, from September 1990 to August 1993. Thirty were cases of rectal cancer and the remainder were other colorectal diseases. The method consisted of injecting 0.5 of a dextran solution market with radioactive technetium in the perineal region and obtaining images by a gamma camera. In the rectal cancer patients, the tracer progresses unilaterally or is absent; in the others, it is bilateral and symmetrical, although its progress may be slow. The statistical data demonstrated that in rectal cancer, lymphoscintigraphy asseses the nodal involvement approximaltely as that obtained by the sun of the anatomapathological and surgical findings. Based on the results, the following conclusioons were possible: lymphoscintigraphy is a standardized, painless and harmless test that can be performed in all cases; it differentiates patients with rectal cancer from those with other coloproctological diseases; it significantly assesses lymphonodal involvement preoperatively in reactal cancer; its sensitivity is 88.23%, specificity is 87.50%, the positive predictive value is 78.94%, the negative ptredictive value is 93.33% and accuracy is 87.75%. (author) 75 refs., 10 figs., 13 tabs.}
place = {Brazil}
year = {1996}
month = {Dec}
}