A German surgeon accidentally transplanted cells from a patient's malignant tumor into his own hand during surgery, leading to the development of an identical cancerous tumor.
A 53-year-old surgeon in Germany developed a swelling in his left hand near the base of his middle finger five months after treating a patient with a malignant abdominal tumor. The lump measured 1.2 inches (3 centimeters) in diameter and was diagnosed as a cancerous fibrous histiocytoma, a type of tumor containing histiocytes — immune cells that migrate into tissues where they don't belong and then form tumorous growths.
It was the same type of tumor that the surgeon had been removing at the time of his hand injury. A pathologist who examined both people's tumors wondered if they were as identical as they appeared. Researchers collected samples of both tumors, isolated their DNA and conducted a genetic analysis. They found that the tumors not only had similar cellular compositions but were also genetically identical. When the scientists compared the samples to an unrelated histiocytoma, they confirmed that the first two tumors were indistinguishable from each other and 'clearly distinct' from the third. During that prior operation on the abdominal tumor, the surgeon had nicked his palm. The wound was immediately cleaned and bandaged, but the appearance of an identical tumor in his hand months later suggested that the surgeon had accidentally transplanted cells from the patient's malignant growth into his body. The surgeon's tumor was entirely removed via surgery and two years later, he was in good health. There were no signs that the tumor had spread or was returning
SURGERY TUMOR TRANSPLANT CANCER CASE STUDY
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