Granuloma annulare, interstitial

Case 828 20.8.13 (M. Hurt) M 74 atrophic leg plaques - interstitial 

This was signed out as NLD, but pattern much more interstitial with mucin. 

Case 1245   1.4.15  (H. Diwan)  M 36 forearm 

Case 1258   20.4.15 (M. Hurt)  M 75 arm (disseminated lesions) 

Case 1349   25.8.15  (U. Sundram)  F 35 oedematous plaques on trunk 

The pattern looked much more nodular and suggesting tumid LE.  This may not be .  “Floating collagen sign” (not very obvious) was taken as evidence in favour of IGD, but this is also seen in morphoea. 

Case 1366  17.9.15  (H. Diwan)  M 61 “rash” arm biopsy 

Case 1881  14.8.17 (L. Yu)  F 68 arm 

Overlying acanthosis and compact hyperkeratosis. 

Case 1916  3.10.17  (U. Sundram)  M 36 gen. infiltrative orange-yellow papules/plaques 

This may not be the right diagnosis.  The pattern is of fairly dense, nodular lymphohistiocytic infiltrate with overlying psoriasiform acanthosis and papillary oedema.  Much more chilblain/PLE-like.  Wonder if there has been a mix-up. 

Case 2223  17.12.18  (L. Yu) F 30 arm: interstitial form 

Not very impressive histology – I would have dismissed it as non-specific, but contributors agreed with the diagnosis.  Shows how subtle GA histology can be. 

Case 3015 26.1.22  (H. Diwan)  F 71 rash, thig