Report of first expedition to South America, 1913 . been made from the study of a few pieces of tissue removedfrom a case which has occurred at a distance. Giant-cells were observed in only one of the lesions which wehave studied. This was evidently a very old lesion in whichstrands and islands of cornified epidermis were intermingledwith tissue constituting the nodule. There were in this in-stance foreign body giant-cells grouped around islands ofdisintegrating epithelium. This may explain other observa-tions relative to the presence of giant-cells in verruga lesions,although the frequency wi
Report of first expedition to South America, 1913 . been made from the study of a few pieces of tissue removedfrom a case which has occurred at a distance. Giant-cells were observed in only one of the lesions which wehave studied. This was evidently a very old lesion in whichstrands and islands of cornified epidermis were intermingledwith tissue constituting the nodule. There were in this in-stance foreign body giant-cells grouped around islands ofdisintegrating epithelium. This may explain other observa-tions relative to the presence of giant-cells in verruga lesions,although the frequency with which tuberculosis has beenmistaken for verruga has already been shown. Plasma-cellswere not found in the granulomatous areas, but when presentwere seen more particularly at the periphery of the lesions insome instances lying in the oedematous connective were occasionally observed in the sections. TheprevaiUng cell in the cell nests described above as constitutingthe compact portions of the nodules, in the active phase, as we. Fig. 1. — Section stained with eosin and methylene blue. X 10.
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