Pelvic and para-aortic lymphadenectomy in cancer of the ovary.

The role of the lymphadenectomy in ovarian carcinoma is widely discussed. The natural history of disease, its tendency to spread to peritoneal cavity and the lack of any reported series of careful node dissections undertaken during surgical exploration has made it difficult to establish the real significance of nodal metastatization and the optimal therapeutic approach for patients with positive nodes. At the Istituto Nazionale Tumori, Milan, 341 patients with ovarian carcinoma have been subjected to lymph node dissection. In 253 cases in which lymphadenectomy has been carried out during first surgery, the lymphonodal diffusion has been evaluated by stage, grading and histology. The incidence of lymphonodal metastases increased with the diffusion of the primitive tumour and this is particularly evident for the serous adenocarcinoma. From our data (as shown in our series of 173 cases Stage III with peritoneal and retroperitoneal diffusion) the lymphonodal involvement has to be considered as a negative prognostic factor, influencing survival in a statistically significant way. In the 88 patients subjected to radical lymphadenectomy during second-look surgery, after chemotherapy, a smaller percentage of positive nodes was observed as compared to untreated cases but, on the other hand, we documented a portion of positive nodes not sterilized by sistemic therapy. All this data confirm the necessity to perform radical lymphadenectomy not only as a staging procedure (because of low sensitivity of lymphangiography) but also as a therapeutic one for some patients.

The significance of pelvic and para-aortic lymphadenectomy in the operative treatment of ovarian cancer.

Since 1980, 95 of 320 patients with ovarian cancer of Stages I to IV have undergone pelvic lymphadenectomy. A further 57 patients underwent pelvic and para-aortic lymphadenectomy. In the last three years, 83% of patients with Stage III disease had a lymphadenectomy, and 34% had no gross residual tumour after surgery. This entailed bowel resection in 33% of cases. After cytoreduction and chemotherapy, actuarial 5-year survival in Stages I and II was 90%, and was just over 40% in Stage III. Patients with positive nodes had markedly poorer survival than did those with negative nodes. Three years after only pelvic lymphadenectomy, 36.7% of patients with Stage III disease had no clinical, radiological or biochemical evidence of disease. If the abdomen had been cleared of gross disease at surgery, 70% of the patients had no evidence of disease at 3 years. The therapeutic effect of lymphadenectomy is also reflected in the marked improvement in survival of all patients with Stage III ovarian cancer after the introduction of lymphadenectomy.

[Residual arterial hypertension after excision of an extra-adrenal pheochromocytoma]. / Hypertension artérielle résiduelle après exérèse d'un phéochromocytome extra-surrénalien.

Residual arterial hypertension after excision of a pheochromocytoma of the Zuckerkandl organ, has brought the problem of its etiology. The short term approach consisted in performing, after specific biochemical dosages, a scintigram with IMBG, a scan and a magnetic resonance imaging, to look for a second pheochromocytoma. A negative workup enabled to conclude to an essential arterial hypertension. Nevertheless, this does not exclude the possibility of a long term malignancy, requiring clinical monitoring and IMBG scintigraphy.

Spectrum of catecholamine-secreting tumors of the organ of Zuckerkandl.

In a series of 24 pheochromocytomas, four were tumors in the organ of Zuckerkandl. Their presenting symptoms of headache, palpitation, diaphoresis, and anxiety were similar to symptoms of adrenal pheochromocytomas. Two patients had paroxysmal and two patients sustained hypertension. All four had elevated urinary vanillylmandelic acid, metanephrine or catecholamine levels. Two of the tumors were localized with angiography before the availability of computerized tomography. Two patients underwent initial computerized tomography, which was nondiagnostic. Later scans looking specifically for organ of Zuckerkandl tumors were positive. Organ of Zuckerkandl tumors, like other ectopic pheochromocytomas, have a higher rate of malignancy. Two of the four were malignant tumors. One patient died 4 years after operation, but the other patient remains stable despite metastatic disease 8 years after operation. The two patients with benign tumors remain well 2 and 3 years after resection and treatment with alpha-blockade.