Background: The heterogeneous nature of hematopoietic sarcoma has restricted the diagnosis and treatment of this disease to the extent that annually, several patients lose their lives. Given the lack of comprehensive epidemiologic information on the incidence of hematopoietic sarcoma in the Iranian population, we designed the present study to evaluate the distribution pattern of this disease. Methods: In this national population-based cancer registry study, we collected data from patients diagnosed with hematopoietic sarcoma who were registered in the Iran National Cancer Registry (INCR) between 2009 and 2013. For each patient, the variables of age, sex, province, year of diagnosis, site of involvement and morphology were collected. Results: In 45 cases from 18 provinces of Iran, we found that the incidence rate of the disease was 0.60 (95% CI: 0.44-0.80) per million persons. Among all provinces, Ilam had the highest incidence of hematopoietic sarcoma with a rate of 2 (95% CI: 0.05-11.14) per million persons, while Isfahan had the lowest incidence with a rate of 0.21 (95% CI: 0.01-1.16) per million persons. The incidence rate of the disease increased with age and the disease was slightly more common in men (0.63 [95% CI: 0.41-0.94] vs. 0.56 [95% CI: 0.35-0.86] per million persons). The frequency of hematopoietic sarcoma in connective and soft tissues was higher than other anatomical sites and we found that myeloid morphology was the most prevalent morphology. Conclusion:The resulting data provided a valuable perspective on the distribution pattern of hematopoietic sarcoma in Iran; however, further studies are required to confirm these results.

This method allows the recipient to access new stem cells that are functioning properly (Peccatori and Ciceri, 2010;Niederwieser et al., 2016). This treatment method is used to cure many different malignant and benign hematological and non-hematological diseases. The survival of many patients after bone marrow transplantation is increased and there is a significant improvement in their quality of life (Majhail et al., 2015).In recent years, bone marrow transplants have been

Background: The heterogeneity, high rate of mortality and lack of comprehensive diagnostic methods have categorized primary sarcomas of the thorax as a malignancy with dismal outcomes and unknown etiology. Given the fundamental role of epidemiological analysis in establishing management strategies, we designed a study with focus on the epidemiological characteristics of primary thoracic sarcomas in Iran.   Methods: This national population-based cancer study was conducted on patients with histologically confirmed sarcoma of the thorax referred to the Iranian National Cancer Registry between 2009 and 2014. The incidence was calculated as number of cases per 100,000 person-years and was age-adjusted by the direct method using the weight of the 1960 world standard population.   Results: Over a 6-year period, 1477 cases with pathologically confirmed thoracic sarcomas were registered in Iran, of which 896 were male and 581 were female. Khuzestan Province had the highest incidence of thoracic sarcomas as compared to other provinces. Malignant mesothelioma was the most common histological subtype (20.85%). Moreover, the age-standardized incidence rate (ASR) of the disease was 1.94 per 100,000 which was more common in males than females with the highest incidence rate in men aged more than 65 years.  Conclusion: Our study provided valuable epidemiologic data on characteristics of thoracic sarcomas. This data can be used for strategizing preventive measures.