Pituitary Gland, Pars Distalis - Atrophy - Gallery

Pituitary Gland, Pars distalis - Atrophy in a female F344/N rat from a chronic study. The pars distalis (asterisk) is reduced in size and contains a focal aggregate of yellow-brown pigment (likely hemosiderin) within macrophages (arrow).

Pituitary Gland, Pars distalis - Atrophy in a female F344/N rat from a chronic study. Higher magnification of Figure 1 shows the reduction in the size of the pars distalis (asterisk) and the focal aggregate of macrophages (arrow) containing yellow-brown pigment (likely hemosiderin).