Abstract
This case report describes the diagnostic process of a 30-year-old male patient with low back pain that ultimately led to the discovery of a cluster of Hodgkin's disease in a large chemical company with 2500 employees. The case began 40 years ago when the patient, after 8 months of pain and unsuccessful diagnostic efforts including X-rays, was referred back to work by an insurance doctor. Despite a normal clinical examination, the company doctor elected to refer the patient back to his family doctor for further examination. A few weeks later, new X-rays revealed a large mass near the spine, leading to the diagnosis of Hodgkin's disease. The company doctor noted that he had recently seen 2 other cases of Hodgkin's, which prompted him to do further investigation. This led to the discovery of 6 cases of Hodgkin's disease out of 2500 employees, a number considered statistically significant and unlikely to be a coincidence.
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