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Herbert Edmond Metcalf, B.S., Agricultural College, N. D.
JAMA. 1918;70(1):20. doi:10.1001/jama.1918.26010010001009.
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The specimen described was given to me by Dr. Will G. Nichols of Fargo, N. D., in response to a request for human material to be used for class work in histology. The tube was serially sectioned, and only on examination of the finished slides was the double nature of the lumen revealed.

The patient from whom this tube was taken was operated on for a dislocated and adherent ovary that had caused severe pain at intervals for several years. A year and a half before the present operation her appendix had been removed by another physician as being the cause of the trouble, but the removal afforded no relief. Dr. Nichols operated to break up the adhesions around the ovary, and it was found that the ovary was large and inflamed, as was also the tube on that side. The tube had a decidedly tuberculous appearance when examined microscopically,


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