Onion peel appearance of splenic capsle is seen in-
The spleen may be moderately enlarged. Capsular fibrous thickening is common, as is follicular hyperplasia with numerous plasma cells in the red pulp. Central penicilliary aeries characteristically show thickening and perivascular fibrosis, producing onion-skin lesions. Robbins 9 th edition page no. 130
SLE
Scleroderma
RA
Sjogrens
General pathology