[Demographic charectrestics and risk factors in 320 thyroid cancer patients]

Thyroid cancer is a rare disease which includes less than 1% percent of all human cancers. The aim of this study is to evaluate the demographic characteristics and risk factors among patients with thyroid malignancy at the Cancer institute and Imam Khomeini hospital in Tehran Iran. This is a retrospective descriptive study of the charts of 320 patients admitted with the diagnosis of thyroid malignancy based on pathologic reports in the above- mentioned hospitals from 1992 to 2002. From the 320 patients diagnosed with thyroid malignancy 68.1% were papillary cancer, 10.9% were follicular cancer, 10.6% were anaplastic cancer, 9.06% were medullary cancer and 1.2% were lymphoma. The average of the patients was 50.2 years, ranging from 12 to 98 years; 60.6% were female and 39.4%were male; 22.8% of the patients had histories of thyroid nodule and 5% had received radiation therapy. From the anatomic point of view 57.5% of the cancers were in the right lobe of thyroid, 38.1% were in left lobe and 4.4% in the isthmus. None of the patients had positive family history of thyroid malignancy. Thyroid malignancy is more prevalent in the fifth decade of life and more common among females. Therefore, among patients in this group, alarming symptoms, such as anterior neck mass, thyroid nodule and voice change, should be evaluated more seriously

Frequency of medical symptoms in Iranian Skiers

Some skiers suffer from medical symptoms during or after skiing, especially downhill skiing. However, there has been no investigation on medical problems in skiers. In this study, our main objective was to evaluate the frequency of medical symptoms during or after ski among Iranian skiers. This cross sectional descriptive study was performed in winter of the year 2005, at Dizin piste [Iran]. We evaluated demographic data and medical history of skiers, as well as the frequency of medical symptoms during ski using a questionnaire. The relations between sex, medical and drug history, smoking habits, and symptoms were assessed by chi-squared and fisher's exact test. The relation between age, duration of skiing, history of previous skiing [in years] and symptoms was analyzed by means of independent t- test. P <0.05 was considered significant. Out of 1448 skiers, 74% were male and the mean age of subjects was 25.2 [ +/- 8.4] years. A total of 1208 skiers wore medical glasses or lenses during skiing, and visual disorders were found in 15.2% of skiers. Among all subjects, one medical symptom was found in 20.1% and two medical symptoms or more in 3.6%. The most common clinical profile was headache, nystagmus and true vertigo. Occurrence of symptoms had significant association with wearing glasses or lenses during routine life, habit of smoking and previous ski injury. Alcohol consumption was seen in 31.2% skiers, and it had a borderline relation with incidence of symptoms. There was not any association between incidence of symptoms and sex, age, duration of skiing, wearing glasses or lenses during skiing, and history of motion sickness. There were at least two symptoms in 3.6% of skiers. This finding shows ski sickness is different from other altitude sicknesses