An epidemiological study in an Anatolian village in Turkey environmentally exposed to tremolite asbestos.

After several cases of malignant pleural mesothelioma (MPM) were detected in the village of Kureysler in the Kütahya district of western Turkey, an epidemiological study was conducted. A questionnaire was completed by 124 villagers who were older than 20 years and standard posteroanterior chest X-rays were taken. The films were evaluated by three chest physicians. Samples of the white stucco that had been used by almost all villagers for indoor painting for many years were mineralogically examined. Chest X-rays showed that 23 (18%) had pleural plaques and calcifications compatible with asbestos exposure. Male sex and old age were associated with occurrence of pleural plaques. An analysis of white stucco samples revealed tremolite asbestos. In conclusion, tremolite fibers might be the cause of the high incidence of pleural plaques and MPM cases in the village of Kureysler.

Environmental fibrous zeolite (erionite) exposure and malignant tumors other than mesothelioma.

We studied the mortality in three villages in the Cappadocian region of Central Anatolia, Karain, Tuzköy, and Sarihidir, which were exposed to fibrous zeolite (erionite), a known carcinogen more potent than the amphibole asbestos. Between 1970 and 1994, there were 305 deaths in Karain, and 177 (58%) were cancer related, including 150 (49.2%) malignant pleural mesothelioma, seven (2.3%) malignant peritoneal mesothelioma, and six (1%) gastroesophageal carcinoma. Four deaths (1.3%) from lung cancer included two nonsmoking females. There were three cases (1%) of leukemia and six of other malignancies (1.9%). Between 1980 and 1994, there were 519 deaths in Tuzköy (T) and Sarihidir (S) (T = 432, S = 87). Of these, 257 were cancer related, and included 120 cases of malignant pleural mesothelioma and 64 cases of malignant peritoneal mesothelioma. Intraabdominal carcinoma was noted in 29 patients and 14 patients had lung cancer (four of whom were nonsmoking women). There were five cases of gastroesophageal cancer, five deaths due to leukemia, and 16 cases of various malignancies. These mortality figures support the hypothesis that erionite fibers cause cancer other than mesothelioma and lung cancer. Mineralogic analyses of the tissues should be performed to demonstrate this relationship.

Birch pollen related food hypersensitivity: as a para-occupational syndrome.

Two patients presented with allergy to birch pollen and hypersensitivity to hazelnut and apple. Since both of these patients developed pollen sensitivity when they were abroad for occupational purpose, we want to mention this situation as "a para-occupational syndrome".