Pyloric stenosis (PS), also known as infantile hypertrophic pyloric stenosis, is caused by hypertrophy of smooth muscles of the pylorus. The pylorus is the outlet of the stomach and therefore its constriction leads to obstruction, often observed as projectile vomiting in the newborn infant.
Breastfeeding appears to protect infants from infection. In a study by Dewey et al, infants who breastfed had a lower incidence of diarrhea, otitis media (ear infection), and upper respiratory infections in the first year of life.
Schizophrenia is a psychotic disorder, which causes severely impaired thinking, emotions, and unusual behaviors. Schizophrenic patients are typically unable to recognize sensory stimuli and may have enhanced perceptions of sounds, colors, and other features of their environment.
Ovarian cancer is a malignant growth arising from the ovary. In the US almost 20,000 cases of ovarian cancer were reported in 2006.
Breast cancer is the most common cancer in women. In 1990, the incidence of breast cancer was 5–7 per 100 women in developed countries in patients less than 70 years of age, and 1–2 per 100 in Asian and African countries.1