Case Number : Case 2395 - 4 September 2019 Posted By: Dr. Hafeez Diwan

Parakeratosis, acanthosis, dermal perivascular and periappendageal lymphocytic infiltrate and dermal mucin deposits are the salient features. I think that it's subacute cutaneous LE. Is there follicular mucinosis in the last figure? 

I think that follicular mucinosis (in this case) is secondary to eczema

Follicular Mucinosis is the basic pathology. Probably inflammatory, because I don't see any atypical lymphoid cells.

Follicular mucinosos is only a pathologic finding here, I don´t think it has any specific association in this case. This is a spongiotic dermatitis that needs to be correlated with clinical diagnosis.

Indeed, there is follicular mucinosis.  The lymphocytes were CD3 and CD4 positive.  CD8 and CD7 were largely negative.  The features are therefore consistent with mycosis fungoides.

Follicular Mucinosis 

Agree some eczematous features with follicular mucinosis. I would not rush to diagnose MF without clinicopathological correlation and probably quite a bit of follow-up but obviously this may progress in time.