Abstract
Between June 1991 and October 1992, we used presurgery lymphangiograms and intraoperative radiographs to identify and remove suspicious nodes in the pelvic and para-aortic chains of 19 patients with bulky pelvic cancers. Surgery comprised extraperitoneal exploration using a midline vertical or paramedian "J" incision. After grossly enlarged nodes were removed, an intraoperative anterior-posterior (AP) abdominal radiograph was obtained. The exposure field approximated the 24-hr delay AP LAG radiograph. Both films were compared in the operating room to confirm removal of abnormal nodes. Initial resection removed all suspicious nodes in 16 of 19 cases. Additional dissection resulted in successful node excision in the other 3 patients. Most of these "missed" nodes were behind or between vessels. The median number of nodes sampled was 15 (range 2-47). Bilateral sampling was performed in 15 cases. Metastatic tumor was present in 14 patients (74%) who had from 1 to 8 positive nodes. Of the 5 negative specimens, all contained lipogranulomata; two had extensive fatty replacement, 2 contained Müllerian inclusions, and 1 had reactive follicular hyperplasia which could be accountable for the radiographic abnormalities. Extracapsular extension was noted in 12 of 14 metastatic samplings. Radiotherapeutic treatment planning was then tailored to lymph node status and the location of positive nodes. Combined use of preoperative LAG and intraoperative films is useful in ensuring that complete resection of abnormal nodes has been accomplished. Whether removal of gross lymph node metastases enhances survival requires further study.
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