Dolff J J, Weissenfels E
MMW Munch Med Wochenschr. 1975 Feb 28;117(9):323-8.
It is shown in a series of cases that phase-contrast microscopy is particularly suitable for intra-operative diagnosis in almost all gynecological operations. Also in smaller diagnostic measures (e. g. punch biopsy from the urinary bladder and rectum as well as curettage), phase-contrast assessment of the extracted tissue is possible with astonishing reliability.