Morphology of Atrophy Grossly, The color is darker;the texture becomes hard or firm;the margin of the organs is shrunken. o Histologically, The size and/or the number of the parenchyma cells are decreased.Pigment depositon can be seen in the atrophic cytoplasm.The interstitial connective tissue and the adipose tissue can proliferate. Lipofuscin in myocardiacyte atrophyLipofuscin in myocardiacyte atrophy Morphology of Atrophy  Grossly, The color is darker; the texture becomes hard or firm; the margin of the organs is shrunken.  Histologically, The size and/or the number of the parenchyma cells are decreased. Pigment depositon can be seen in the atrophic cytoplasm. The interstitial connective tissue and the adipose tissue can proliferate