Cytological surveillance for mild cervical dyskaryosis.
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Biomedical subjects
Publications and source records attributed to D Luesley.
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Twenty patients with epithelial ovarian carcinoma were treated with high-dose cisplatin 200mg m-2. Patients were to receive three cycles at 21 day intervals. Treatment was stopped if severe myelosuppression or any neurotoxicity occurred. Overall, eight (40%) of patients responded with a complete response in five (25%). Four of 16 (25%) previously treated patients responded. The median duration of response was 44 weeks (range 6-130). In patients previously treated there was a significant association (P < 0.002) between response and a remission free interval of 52 weeks or more from primary chemotherapy. Toxicity was assessable in 18 patients. Alopecia and nausea/vomiting were common. Myelosuppression was recorded in nine patients delaying planned administration in eight of 35 cycles. Five patients developed anaemia and six thrombocytopenia. Neurotoxicity affected seven patients and varying degrees of tinnitus six patients. Neurotoxicity and myelosuppression were indications for cessation of treatment in 8 patients receiving less than three cycles. Analysis revealed no significant association between toxicity and prior cisplatin exposure, age or the amount of high-dose cisplatin administered. This series reveals that it is possible to achieve good response rates using high-dose cisplatin without encountering debilitating neurotoxicity.
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Cervical intraepithelial neoplasia remains a significant problem with regard to diagnosis and treatment. The emphasis has now shifted toward selection for treatment, partly as a result of an improved understanding of risk and partly as a result of simple excisional methods of treatment with low morbidity. It is now apparent that diagnoses based on small directed biopsy specimens may be misleading and whole transformation zone specimens should be regarded as the ideal. Although the role of oncogenic human papillomaviruses still remains obscure with regard to the etiology of cervical intraepithelial neoplasia, continued investigation is essential and rewarding in terms of an improved understanding of the molecular biology of malignant transformation and the interaction of transformed cells with the host's immune system.
The sampling efficacy of the Ayre and Rocket cervical spatulas was compared in a randomized controlled trial involving 533 women who were attending a colposcopy clinic either for investigation of cytological abnormality or for review after treatment of CIN. Smears were compared with respect to the presence of cytological abnormality and two types of normal cervical epithelial cells (endocervical and immature metaplastic cells) which are considered indicators of adequate cytological sampling. Smears taken with the Rocket spatula were significantly less likely to contain immature metaplastic cells (95% CI on difference in proportion; 5-30%), but more likely to contain endocervical cells (95% CI 16-36%). No significant difference was found in the proportion of smears containing one or other type of indicator cell or in the yield of abnormal smears. It is concluded that the Rocket spatula offered no advantage when used in these circumstances. This study illustrates how spurious conclusions of sampling efficacy can be drawn if only one type of indicator cell is used as an endpoint.
From November 1981 to July 1985, 124 women with International Federation of Gynecology and Obstetrics (FIGO) stage III ovarian cancer were treated in prospective studies of surgery and chemotherapy in our institution. Patients with no macroscopic cancer after primary surgery (n = 16) received five cycles of adjuvant cis-platinum; those with residual cancer after primary laparotomy (n = 108) underwent a second surgical debulking after three or five cycles of cis-platinum-based cytoreductive chemotherapy. Total macroscopic tumor clearance was achieved in 26 of these 108 patients. Fourteen patients with total tumor excision at primary laparotomy remain in complete clinical remission a minimum of 36 months after diagnosis, but the median progression-free interval for the other two groups was 9 and 17 months, respectively. The survival for women who have total tumor clearance only at secondary surgery after chemotherapy is inferior to that for women with primary macroscopic tumor excision followed by chemotherapy.
The potential role of consolidation therapy has been tested in a randomized trial in ovarian cancer. Patients were randomized to receive either whole abdominal radiotherapy using the moving strip technique (n = 56) or one year of chlorambucil (n = 53) following primary surgery, five courses of cisplatinum 100 mg/m2, and second look laparotomy. Overall survival at two years was 35%. There was no significant difference in survival between the two groups, and in spite of the observation that approximately 50% of the patients were optimally debulked prior to consolidation, no subgroups in either arm could be identified who might benefit from consolidation therapy. Toxicity was considerable in both arms, and almost 50% of patients were unable to complete the planned treatment in both arms. These results suggest that after primary surgery and cisplatinum chemotherapy, there is no indication for consolidation therapy with either radiotherapy or alkylating agents.
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A case-control comparison of adequate and inadequate cervical smears (adequacy being defined as the successful detection of cervical intraepithelial neoplasia and inadequacy as the failure to do so when disease was almost certainly present) was undertaken to determine whether indicators of effective cytological sampling could be identified. The association between inadequate smears and the absence of two types of normal epithelial cells (columnar cells of endocervical origin and immature metaplastic cells) was measured. A significant and substantial association was found between inadequate cervical smears and immature metaplastic cells and between inadequate smears and both types of cell. Endocervical cells alone were less likely to be found in inadequate than in adequate smears, but this association was not statistically significant.
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The survival benefit of second-look laparotomy after completion of primary chemotherapy in patients with epithelial ovarian cancer has been assessed in a prospective randomised trial of 166 patients. Patients were randomised into three groups. All were initially treated with cisplatin (100 mg/m2 x 5) after primary laparotomy. Group A (n = 53) was scheduled to have a second-look laparotomy, followed by cyclical oral chlorambucil. Group B (n = 56) was scheduled to have a second-look laparotomy, followed by total abdominal and pelvic irradiation, and group C (n = 57) received oral chlorambucil as for group A but had no second-look operation. With a median follow up of 46 months (range 21-64), no differences in survival were noted between the three groups. The median survival for group A was 21 months (95% CI 11-31 months), for group B 15 months (11-19), and for group C 17 months (8-26). Thus second-look laparotomy after completion of first-line single-agent cisplatin chemotherapy did not confer any survival benefit on patients with epithelial ovarian cancer.
Treatment of cervical intraepithelial neoplasia, both squamous and glandular, is based on the premise that this condition may ultimately progress to invasive cancer. Treatments have evolved in a conservative direction resulting in reduced morbidity yet also achieving satisfactory control of disease. As yet there is no way in which those cases that have malignant potential can be distinguished from those that do not. Satisfactory management is dependent upon the exclusion of an invasive process. Cytologic, colposcopic and histologic confirmation of preinvasion are therefore natural precedents to management.
We describe a woman who developed hepatic amoebic abscesses during pregnancy, and subsequently amoebic peritonitis. We believe this to be the first such recorded case in the United Kingdom, and unusual in that the patient had never been abroad.