Skin nontumor
Spongiotic, psoriasiform and pustular reaction patterns
Spongiotic dermatitis


Topic Completed: 1 August 2011

Minor changes: 18 March 2020

Copyright: 2002-2020, PathologyOutlines.com, Inc.

PubMed Search: Spongiotic dermatitis

Mowafak Hamodat, M.B.Ch.B., M.Sc.
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Cite this page: Hamodat M. Spongiotic dermatitis. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/skinnontumorspongioticdermatitis.html. Accessed May 27th, 2020.
Definition / general
  • Clinically correlates with eczematous dermatitis
  • Encompasses a large number of diseases, including allergic contact dermatitis and irritant contact dermatitis
Microscopic (histologic) description
  • Intraepidermal edema with clear spaces separating keratinocytes
  • Acute: also perivascular lymphocytic infiltrates in upper dermis, lymphocyte exocytosis
  • Subacute: focal parakeratosis, acanthosis, papillomatosis, eosinophils
  • Chronic: prominent parakeratosis, acanthosis, papillomatosis; may have minimal spongiosis; fibroplasia of papillary and upper reticular dermis; variable inflammatory infiltrate
Microscopic (histologic) images

Contributed by Mark R. Wick, M.D.

Chronic


Contributed by Dr. Asmaa Gaber

Spongiotic dermatitis

Differential diagnosis
  • Early cutaneous T cell lymphoma: large numbers of cerebriform nuclei, Pautrier microabscesses, epidermotropism
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