Classification of trachoma by site rather than density of opacities is better related to visual prognosis and helps in selection for graft surgery. The cases are divided into 3 groups: peripheral corneal opacities, central corneal opacities, and diffuse corneal opacities (ground-glass cornea). A central lesion has the poorest prognosis, especially in children.

Congenital transmission of tuberculosis is rare. In the past the diagnosis has usually been made in the post-mortem room and the condition has interested the pathologist more than the clinician. In the majority of published cases the nature of the illness has been apparent soon after birth. In others, however, the symptoms have not appeared for several weeks or months and it is not easy to acce...

1. Pulmonary Embolic Disease: An Overview Venous thrombolembolic disease, including deep venous thrombosis (DVT) and pulmonary embolism (PE), is an important medical condition. It is estimated that there are approximately 5 million cases of deep venous thrombosis annually in the US. At least 10% of these lead to PE, and approximately 10% of these result in death (50,000). PE is the sole or majo...

Food allergy affects 2.5 "b of adults and 6-8 "b of children, and is a leading cause of life-threatening anaphylactic episodes. Food allergy is defined as an adverse reaction to foods that is mediated immunologically and involves specific IgE or non-IgE mechanisms. In this review only IgErelated food allergy will be considered. Many food allergens are glycoproteins, but they do not share any st...

A clinical analysis of 6 patients with pathologically confirmed tonsillar tuberculosis was carried out retrospectively. The subjects comprised three men and three women, ranging in age from 20 to 74 years. All of the patients presented with a sore throat and 5 had lymphadenopathy. Ulcerations, masses and white patches characterized the tonsillar lesions; the pathological findings included caseo...

Malabsorption was present in 29 of 40 symptomatic patients with giardiasis. Twenty-three had impaired D-xylose absorption; in 20 vitamin B12 absorption was low, and 15 patients had steatorrhoea. More severe malabsorption was associated with more marked histological abnormalities. Metronidazole, 2-0 g as a single daily dose on three successive days, produced a parasitological cure rate of 91%. I...