Transient Cortical Blindness After Cardiac Catheterization: A Case Report and Review of Possible Neurological Etiologies.

Cardiac catheterization is a standard procedure performed approximately 1 million times per year. Transient cortical blindness is a rare complication of this procedure. Herein we report a case of complete bilateral vision loss after cardiac catheterization through right radial access, which, to our knowledge, has only been reported once before.

Epidemiology of esophageal cancer.

The incidence of cancer of the oesophagus is high in India but not as high as the rates reported from the Caspian Littoral of Iran. Incidence data available for three places in India--Bombay, Madras, and Bangalore--show regional variations. In Bombay, the rates for males are high compared to Madras and Bangalore.

Epidemiology of head and neck cancers.

Head and neck cancers are common in India and account for about 30% of cancers in males and about 13% in females. In males, oral cavity and pharynx are the commonly affected site, followed by larynx. In females, oral cavity is the preponderant site.

Cancer epidemiology: the Indian scene.

Incidence of cancer in India is lower than in the West and the commonly affected sites are very different. Cancers of the upper alimentary and respiratory tracts (oral cavity, pharynx, larynx, oesophagus, and lung) contribute more than half of the cancers in men and about a quarter in women. In this category, cancers of the oral cavity are very common in some parts of the country and cancers of the pharynx, larynx and lung in others.

Quantification of the role of smoking and chewing tobacco in oral, pharyngeal, and oesophageal cancers.

The aetiologic fractions due to smoking and chewing tobacco have been quantified for the first time, for cancers of the oral cavity, oropharynx, hypopharynx, larynx and oesophagus. The overall aetiologic fractions due to smoking and/or chewing tobacco have been found to be 70% for cancer of the oral cavity, 84% for the oropharynx, and about 75% for the hypopharynx and larynx. In cancer of the oesophagus, however, the fraction is only 50%, showing that another factor or factors play an equal role in the aetiology of cancer of this site.

Feasibility of undertaking cancer incidence studies in rural areas of India.

In the rural areas of developing countries, modern medical facilities are well below optimum levels and death registration is not mandatory. In India, as a result of such a situation, very few studies have been undertaken on the incidence of cancer in the rural population, though 80% of the people live in villages. The paper presents cancer incidence rates observed in a rural area of India by means of a method involving the use of paramedical personnel for initial screening, to minimize the cost.

A retrospective study of lung cancer in Bombay.

This is a retrospective study of 520 patients with lung cancer, seen at the Tata Memorial Hospital between 1963 and 1970. Matched controls were obtained from those patients who came to the hospital within the same period and who were diagnosed as not having cancer. The patients and controls were matched for age, sex and community.

A note on the distribution of cancer in some endogamous groups in Western India.

Endogamous groups in Western India have been known to have a wide degree of genetic diversity. Analysis of the data available on some of the endogamous groups belonging to two main communities attending the Tata Memorial Hospital, Bombay, viz. Hindus from Maharashtra, and Hindus from Gujarat show that one of the endogamous groups, the Maharashtrian Brahmin has a significantly different pattern of cancer site distribution compared to the other groups studied.