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Arch Surg. 1942;44(6):1038-1052. doi:10.1001/archsurg.1942.01210240077005.
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Tumors of tendon sheaths, excluding ganglion, are rare. Buxton,1 whose work on tendon sheath tumors is so frequently quoted, stated:

... This structure [tendon sheath] is a specialized part of connective tissue and is therefore subject to the same neoplasms as other connective tissue. Such neoplasms are not uncommon. Therefore one searches for some reason why tendon sheaths should be so immune from tumor formation, and it is very difficult to find any facts bearing on this point.

According to Canavero,2 only 1 or 2 cases are found in every 2,000 hospital or clinic admissions. At the Brooklyn Cancer Institute, the Cumberland Hospital and the Jewish Sanitarium and Hospital for Chronic Diseases, among 10,500 hospital admissions and 157,000 clinic admissions in the past ten years, only 5 cases of tumors of the tendon sheaths were found. And yet these 5 cases all occurred in the year 1939-1940. Are these


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