Three-dimensional reconstruction of jejunal biopsy in tropical sprue.

There is a lot of diversity in the observations on jejunal histology between light and discretion microscopy in tropical sprue. In order to compare the light and dissection microscopic appearances, a three-dimensional model of the villous pattern was constructed after a study of 350 serial sections of jejunal biopsy from a patient with tropical sprue. There was considerable variation in the morphological appearance of the villi in different sections. The changes seen varied from mild to partial villous atrophy. Broad synechia and bridge formation between adjoining villi due to fusion was frequently observed. It is postulated that the process of fusion of villi may be partly responsible for the development of features of partial villous atrophy seen in jejunal biopsies in tropical sprue. Normal jejunal pattern reported by some workers in patients with tropical sprue could possibly be due to inadequate sampling of the total biopsy piece.