Ian D Todd
University of Manchester
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Featured researches published by Ian D Todd.
Cancer | 1983
E Whitehead; Stephen M Shalet; G. Blackledge; Ian D Todd; Derek Crowther; Colin G Beardwell
Ovarian function has been studied in 44 adult females who previously received quadruple chemotherapy (MVPP) for Hodgkins disease. The median age at treatment was 23 years, and the length of time between completion of treatment and study ranged from 6 months to 10 years (median, 30 months). Seventeen women maintained regular menses, 10 developed oligomenorrhea, and 17 developed amenorrhea. At treatment, the 17 women who subsequently developed amenorrhea were significantly older (median, 30 years) than those who maintained regular menses (median, 22 years) or developed oligomenorrhea (median, 23 years). All patients older than 36 years at the start of treatment stopped menstruating during chemotherapy. The cause of the menstrual disturbance in these patients was chemotherapy‐induced ovarian damage characterized by high serum gonadotrophin and low serum estradiol concentrations. After completion of treatment there were 17 pregnancies, which resulted in 9 normal infants, 3 terminations, and 4 spontaneous abortions. Nine patients took the combination oral contraceptive pill throughout chemotherapy; however, subsequently 4 developed amenorrhea and 3 oligomenorrhea, suggesting that these patients had not been protected from chemotherapy‐induced ovarian damage. Estrogen replacement therapy was of definite benefit in the symptomatic patients with premature ovarian failure.
Cancer | 1982
E Whitehead; Stephen M Shalet; G. Blackledge; Ian D Todd; Derek Crowther; Colin G Beardwell
The effects of Hodgkins disease and quadruple chemotherapy on gonadal function have been investigated in 93 male patients with Hodgkins disease. Nineteen men were studied before they received chemotherapy. Fifteen of the 19 had a sperm count of 20 million/ml or greater and motility was at least 40% in all 15. In the remaining 74 men, gonadal function was studied after completion of chemotherapy (6 months‐8 years). Semen was obtained from 49 men who had received six or more courses of MVPP. Forty‐two were azoospermic and five of the remaining seven had a sperm count below 1 million/ml. Decreased libido and sexual activity was common during treatment but in the majority of men these returned to normal after completion of chemotherapy. The median FSH and LH levels and the median increments in serum FSH and LH levels after LHRH administration were significantly elevated compared with an age‐matched control group. The mean testosterone level of the patients was significantly lower than in controls suggesting Leydig cell damage but androgen replacement therapy was not indicated in any individual patient. No evidence of hyperprolactinaemia as a result of MVPP therapy was found. These results suggest that sperm storage before chemotherapy represents the main possibility for these patients to have children after completing chemotherapy. Before starting chemotherapy, advice should be given to these patients concerning possible changes in sexual behavior during treatment and the very high incidence of permanent infertility following treatment.
Cancer | 1988
William Steward; Derek Crowther; L J McWilliam; J. Mary Jones; David P Deakin; Ian D Todd; G. Blackledge; J. Wagstaff; J. Howard Scarffe; Martin Harris
One hundred sixty‐two patients with Stages III and IV non‐Hodgkins lymphoma of low‐grade histologic type were treated with combination chemotherapy using cyclophosphamide, vincristine, and prednisolone (CVP) followed by radiotherapy to sites of previous bulk disease. The patients were randomized to receive either follow‐up alone or “maintenance” chemotherapy with 2 years of intermittent chlorambucil. A complete remission was obtained in 56% of patients and the median survival was 64 months (median follow‐up, 74 months). Multivariate analysis revealed stage (P < 0.0001) and Karnofsky performance status (P = 0.021) to predict complete response (CR) and the achievement of a CR (P < 0.0001), female sex (P = 0.008), the absence of bulk disease (P = 0.038) and low serum alkaline phosphatase (P = 0.002) to predict prolonged survival. The median relapse‐free survival (RFS) of the complete responders was 41 months. A prolonged RFS was predicted by low stage (P = 0.014), low serum lactic dehydrogenase (LDH) (P = 0.045) levels, and by the administration of maintenance chlorambucil (P = 0.045). A prolonged survival of the complete responders was predicted by a low number of nodal sites of involvement with lymphoma at presentation (P = 0.022) and lack of liver involvement (P = 0.011). The administration of oral maintenance therapy with chlorambucil for a full 2 years was only possible in 38% of patients, mainly because of progression of disease and the induction of thrombocytopaenia, but despite this it prolonged the median RFS by 38 months and its use could be considered when future studies are being designed.
European Journal of Cancer and Clinical Oncology | 1985
William P. Steward; Martin Harris; J. Wagstaff; J.H. Scarffe; David P Deakin; Ian D Todd; Derek Crowther
Thirty-six patients presenting with stage II-IV primary gastrointestinal non-Hodgkins lymphoma of high-grade pathology were treated in a prospective study from 1975 to 1983 with combined modality therapy. A complete response rate of 56% was obtained and the overall 5-yr survival rate was 36%. The 5-yr relapse-free survival rate of the complete remitters was 79%. Multivariate analysis revealed that the remission achieved (P less than 0.001) and the completeness of primary surgery (P = 0.018) would reliably predict the duration of overall survival. The finding of diffuse histiocytic histology (Rappaport) predicted longer relapse-free survival. The majority of deaths were related to intra-abdominal complications and not to disseminated lymphoma. Gastrointestinal tract non-Hodgkins lymphoma of high-grade pathology of all stages is curable with a combination of chemotherapy and radiotherapy following surgery to remove as much macroscopic disease as is possible.
BMJ | 1978
J J Best; George Blackledge; W S Forbes; Ian D Todd; Brian Eddleston; Derek Crowther; I. Isherwood
During July 1976 to Demember 1977, 150 patients with Hodgkins disease and 138 with non-Hodgkins lymphoma were examined by computed tomography (CT). In 45 cases 50 repeat examinations were conducted. Concurrent laparotomy and lymphography were performed on 68 and 56 patients respectively. The overall incidence of false-positive CT examinations as confirmed by laparotomy was 7.4%. In 18 patients with non-Hodgkins lymphoma in the abdomen there was good correlation between the two techniques. Of the 50 patients with Hodgkins disease who underwent laparotomy, 17 had splenic disease and 14 minimally enlarged lymph nodes in 20 areas; CT, however, detected only four diseased spleens and five minimally enlarged lymph nodes. Nevertheless, CT often detected enlarged lymph nodes missed by lymphography and was 23% more efficient than lymphography in detecting unsuspected disease. CT also detected unsuspected disease in patients with relapse of lymphoma. CT may replace other non-invasive investigations of abdominal disease in patients with lymphoma and give a reliable guide to prognosis. It does not, however, eliminate the need for laparotomy in staging Hodgkins disease.
BMJ | 1979
W J Benson; J H Scarffe; Ian D Todd; M Palmer; Derek Crowther
Clinical records of 47 patients in whom spinal-cord compression was the presenting feature of plasma-cell myeloma were analysed retrospectively. Patients were referred during 1954-78. Median survival was 30 months and prognosis was best for those in whom the site of cord compression was the thoracic region. Early laminectomy and decompression followed by adequate radiotherapy resulted in complete or good partial response in over a third of patients who presented with complete paraplegia. Improvements in supportive care and more effective chemotherapy allow spinal-cord compression in myeloma to be treated promptly and vigorously, thus improving duration and quality of survival in a substantial proportion of patients.
Clinical Radiology | 1985
Heather Anderson; Jeremy P.R. Jenkins; David J. Brigg; David P Deakin; Michael K Palmer; Ian D Todd; Derek Crowther
Three hundred and two previously untreated patients with Stage IA-IVB Hodgkins disease were reviewed to determine the prognostic significance of mediastinal involvement. Mediastinal bulk disease was defined as either a maximal mediastinal width of 7.5 cm or more, or a ratio of the maximum width of mediastinal disease to the maximum chest diameter of greater than or equal to 0.33, or a ratio of the maximum width of mediastinal disease to the chest diameter at T5-T6 greater than or equal to 0.33, or as an area of mediastinal disease greater than or equal to 100 cm2. Bulk disease outside the chest was defined as a mass of lymph nodes measuring 5 cm or more in any axis. The presence of mediastinal bulk disease was of adverse prognostic significance for remission duration and survival in patients with Stage IA-IIB Hodgkins disease, but for patients with more advanced disease the effect of mediastinal bulk on remission duration and survival was not statistically significant. The mediastinal bulk variable which most significantly related to prognosis was the ratio of the maximum mediastinal disease to the chest diameter at T5-T6.
Cancer Chemotherapy and Pharmacology | 1983
Colin G Beardwell; A Hindley; Peter M Wilkinson; Ian D Todd; G Ribeiro; D Bu'Lock
SummaryThe combination of trilostane 960 mg daily and either dexamethasone 0.5 mg b.d. or hydrocortisone 10 mg b.d has been used to treat advanced metastatic breast cancer in post-menopausal women. Twenty-three patients had assessable discase and received treatment for a minimum of 8 weeks. Six (26%) showed an objective response and three (13%), stabilisation of previously progressive disease, sustained for at least 3 months. Side-effects were mainly gastrointestinal. Biochemical studies suggest that the mechanism of action may be inhibition of conversion of androstenedione to oestrone.
Cancer Chemotherapy and Pharmacology | 1987
J. Wagstaff; Ian D Todd; D. Deakin; Peter M Wilkinson; J.H. Scarffe; M. Harris; M. Jones; Derek Crowther
SummaryThis paper reports the 8-year results of comparing the use of two types of adjuvant chemotherapy following involved field radiotherapy for clinical stages I and II high-grade non-Hodgkins lymphoma. Twenty-four patients received 6 weeks of VAP plus 2 years of oral maintenance chemotherapy, and 30 had six cycles of CMOPP. Four patients were not in complete remission at completion of i. v. chemotherapy (CR rate 91%). Ten patients (18.5%) have relapsed (VAP/M=5; CMOPP=5), with only two of these remaining alive, both of them being disease free. There have been three deaths from intercurrent causes, one from malignant melanoma and the other two from myocardial infarction. The relapse-free survivals at 2, 5 and 8 years were 80%, 76% & 76% respectively. The overall survivals at the same time points were 86%, 72% & 68%. There were no significant differences in either relapse-free or overall survival for either of the two treatment groups. The shorter period of weekly intravenous chemotherapy (VAP/M) was better tolerated than 36 weeks of CMOPP, and the former appears to produce equivalent results.
European Journal of Cancer and Clinical Oncology | 1984
William P. Steward; Ian D Todd; Martin Harris; J M Jones; G. Blackledge; John Wagstaff; Heather Anderson; Peter M Wilkinson; Derek Crowther