Onion peel appearance of splenic capsule is seen in
Ref Robbins 9/e p224 In splenic involvement in SLE _splenomegaly, capsular thickeing , follicular hyperplasia,are common feature . central penicilliary aeries may show concerntric intimal and smooth muscle cell hyperplasia , producing onion skin appearance
SLE
Scleroderma
Rheumatoid ahritis
Sjogern's syndrome
General anatomy