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Featured researches published by William K. Evans.


Cancer | 1984

Cytologic diagnosis of hepatocellular carcinoma by fine‐needle aspiration biopsy

L. C. Tag; C. S. Ho; M. J. McLoughlin; William K. Evans; E. E. Donat

From 1976 to June 1982, 237 patients with clinical suspicion of hepatic malignant disease underwent guided percutaneous fine‐needle aspiration biopsy of the liver. Of these, 12 were diagnosed cytologically as „hepatocellular carcinoma”︁ and this diagnosis was confirmed in the follow‐up of all cases. On the basis of the cytomorphologic features observed in the aspirates, the tumor was subclassified into three types; well differentiated, pleomorphic large cell; and poorly differentiated. The various cytologic appearances of different types of hepatocellular carcinoma are presented and illustrated. Cytomorphologically, these three types of hepatocellular carcinoma were distinctly different and their cytomorphologic features were also sufficiently distinctive from those of secondary hepatic cancer to be diagnostic. Guided percutaneous fine‐needle aspiration biopsy of the liver appears to be a definitive minimally invasive means of establishing the diagnosis of hepatocellular carcinoma, and promises to be a valuable diagnostic procedure for potentially resectable localized hepatocellular carcinoma.


Journal of the American Geriatrics Society | 1994

Treatment of Small Cell Lung Cancer in the Elderly

Frances A. Shepherd; Esiahas Amdemichael; William K. Evans; Peter Chalvardjian; Sheila Hogg‐Johnson; Randall A. Coates; Karen Paul

Objective: Since both the incidence of lung cancer and the proportion of the population over age 65 are increasing rapidly in North America, we undertook a retrospective review of elderly patients with small cell lung cancer (SCLC) in an attempt to assess the effect of age on treatment decisions, response, survival, and toxicity.


Cancer | 1984

Radionuclide angiography and endomyocardial biopsy in the assessment of doxorubicin cardiotoxicity

Maurice N. Druck; Karen Y. Gulenchyn; William K. Evans; Avrum I. Gotlieb; John R. Srigley; Ben-Zion Bar-Shlomo; David H. Feiglin; Patricia McEwan; Linda Millband; Kathy Winter; J. David Hilton; George Jablonsky; John E. Morch; Peter R. McLaughlin

Thirty‐eight patients with a mean age of 53.2 years (19 to 75 years of age), who were receiving doxorubicin (D) for malignant disease, were studied in order to determine the relationship between functional and morphologic myocardial changes at different dose levels. Serial patient evaluations included physical examination, chest x‐ray, electrocardiogram (ECG), endomyocardial biopsy (EMB), and rest‐exercise gated nuclear angiography (GNA), at doses of D ranging from 144 to 954 mg/m2 (mean, 426 mg/m2). Physical examination, chest x‐ray, and ECG proved to be insensitive predictors of D cardiotoxicity. Correlation of GNA and EMB in 31 patient evaluations, exclusive of known heart disease, did not reveal any false‐positive angiograms, and all abnormal GNAs were associated with abnormal biopsies. Use of stress GNA uncovered six abnormal ventricles which could have been missed with a rest GNA alone. It has been suggested that: (1) GNA is a reliable monitor of D therapy; (2) an exercise study should be performed when the rest ejection fraction is normal, but is unnecessary when the rest EF is abnormal; (3) all patients with a resting ejection fraction of less than 45%, exclusive of other cardiac disease, should have D discontinued; and (4) endomyocardial biopsy is useful in assessing D cardiotoxicity in patients with other possible causes of an abnormal GNA.


Cancer | 1986

Superior vena caval obstruction syndrome in small cell lung cancer

Jean Paul Sculier; William K. Evans; Ronald Feld; Gerrit Deboer; David Payne; Frances A. Shepherd; J.F. Pringle; J. Lim Yeoh; Ian Quirt; John E. Curtis; James G. Herman

In a series of 643 patients with small cell lung cancer (SCLC), 55 patients (8.6%) had signs or symptoms of superior vena caval obstruction syndrome (SVCO). Relatively long intervals from the onset of the first symptoms of SVCO to the start of therapy were observed, and invasive diagnostic procedures were safely performed in most patients. The pretreatment characteristics of patients with SVCO were not significantly different from those of patients without signs of the syndrome, and survival was similar in both groups. Patients with SVCO were usually treated first with induction chemotherapy, and prompt resolution of signs and symptoms occurred in the majority. Radiation was effective in controlling SVCO at relapse or after failure of initial chemotherapy. It was concluded that SVCO in patients with SCLC should be treated initially with systemic chemotherapy, as for other presentations of this disease. The current data do not support the commonly held view that SVCO in SCLC should be approached as an oncologic emergency.


Metabolism-clinical and Experimental | 1988

Resting energy expenditure in lung and colon cancer.

Daniel W. Nixon; Michael Kutner; Steven B. Heymsfield; Ann T. Foltz; Chandra Carty; Susan Seitz; Katie Casper; William K. Evans; John M. Daly; David Heber; Heinz F. Poppendiek; Freddie Ann Hoffman

Elevated resting energy expenditure (REE) is a possible mechanism of cancer cachexia. We measured REE by whole-body direct calorimetry in patients with colon and non-small cell lung cancer and compared the results with REE in groups of healthy subjects and in patients with anorexia nervosa, with nonmalignant gastrointestinal (GI) disease, with miscellaneous reasons for weight loss, and with chronic lung disease. The mean REE of the cancer patients was not different from healthy subjects, those with GI disease, miscellaneous causes of cachexia, and chronic lung disease, and there was no significant difference in REE between those cancer patients with weight loss and controls with weight loss, except for the anorexia nervosa patients. The REE of the anorexia nervosa patients (female) was significantly lower than the REE of females with lung cancer. Weight loss correlated with REE in female lung cancer patients. Serial comparison of REE of ten cancer patients who lost 5% to 18% of their body weight during study showed no consistent change in REE. We conclude that patients with colon and non-small cell lung cancer, including those with weight loss, have REE similar to normal controls. Relative hypermetabolism may contribute to cancer cachexia, as may absolute hypermetabolism in some subsets of cancer patients.


Cancer | 1984

Acute lymphoblastic leukemia. Possible origin from a mediastinal germ cell tumor.

Murray Larsen; William K. Evans; Frances A. Shepherd; M. James Phillips; Dennis Bailey; Hans A. Messner

The case of acute lymphoblastic leukemia developing shortly after the diagnosis and treatment of a mediastinal germ cell tumor, is reported. The close temporal relationship of these two rare diseases and the presence of a population of mononuclear cells with features of lymphoblasts in the resected germ cell tumor, suggest that the leukemic process originated from the mediastinal tumor.


Cancer | 1984

Serum folate and vitamin B12 levels in patients with small cell lung cancer

Gerald H. Clamon; Ronald D. Feld; William K. Evans; Roy S. Weiner; Barry S. Kramer; Lloyd Lininger; Lilly Gardner; Elaine C. Wolfe; William D. Dewys; Freddie Ann Hoffman

Serum folate and vitamin B12 levels were evaluated in 80 patients with small cell lung cancer at diagnosis and during therapy over a 30‐week period. Approximately one half of the patients were randomized to receive hyperalimentation. Folate and vitamin B12 intake was adequate without parenteral nutrition in these cancer patients. Serum folate and Vitamin B12 levels did not correlate with disease extent. At the initiation of therapy, serum folate declined with increasing weight loss. During therapy, the intake of folate was adequate to maintain a normal serum folate despite marked weight loss.


Cancer | 1985

The effect of intravenous hyperalimentation on the dietary intake of patients with small cell lung cancer. A randomized trial

Gerald H. Clamon; Lilly Gardner; David Pee; Phyllis J. Stumbo; Ronald Feld; William K. Evans; Roy S. Weiner; Edgar M. Moran; Ron Blum; Freddie Ann Hoffman; William D. Dewys

In a randomized trial of 119 patients with small cell cancer of the lung, the effects of a 30‐day course of central intravenous hyperalimentation (IVH) on dietary intake were evaluated. All patients underwent the same aggressive chemotherapy and radiation therapy; 57 patients received IVH and 62 served as controls. Median caloric intake prior to antineoplastic therapy was less than 1.2 times basal energy expenditure, below the maximum necessary to maintain weight. While receiving IVH, patients had increased caloric and protein intake. Once the IVH was stopped, oral intake was transiently depressed and thereafter similar to control patients. Baseline nutritional parameters, age, sex, and immediate toxicity from chemotherapy did not predict subsequent caloric insufficiency. Direct estimation of dietary intake is likely the most valuable measure in selecting patients who will need adjunctive nutritional support.


Cancer | 1980

Combination chemotherapy in invasive thymoma. Role of COPP

William K. Evans; D. M. Thompson; W. J. Simpson; Ronald Feld; M. J. Phillips


Hematology-oncology Clinics of North America | 2004

Treatment of recurrent small cell lung cancer

Angela M. Davies; William K. Evans; Jean A. Mackay; Frances A. Shepherd

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Frances A. Shepherd

Princess Margaret Cancer Centre

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Bruce F. Burns

Toronto General Hospital

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