Clinical, histopathological, and therapeutic features in lupus erythematosus tumidus. A retrospective study.

Autores de IIS La Fe

• Miguel Mansilla Polo

  Autor

Participantes ajenos a IIS La Fe

• La Rotta-Higuera, E
• Morgado-Carrasco, D
• Giavedoni, Priscila
• Garcia-Herrera, A
• Mascaro, J M Jr

Grupos

• Dermatología y Regeneración Tisular

  

  Leader

  Rafael Botella Estrada

Abstract

Lupus erythematosus tumidus (LET) is a rare form of cutaneous lupus erythematosus (CLE) with a controversial connection to systemic lupus erythematosus (SLE). We conducted a retrospective study with 34 LET patients in a Spanish tertiary referral center from 2007 through 2019. Most were women [52.9% (18/34)], with a median age of 53.5 years. Autoimmune or rheumatologic disorders were reported in 52.9% (18/34) of cases, and other CLE variants in 26.5% (9/34). SLE occurred in 8.82% (3/34), while 64.7% (22/34) had autoantibodies. Immunohistochemical CD123 testing tested positive in 75.9% (22/34), while direct immunofluorescence (DIF) showed positivity in 31.8% (7/22) of cases. Treatment included topical agents (100%), antimalarials (73.5%), oral corticosteroids (23.5%), and immunosuppressants (14.7%). All achieved clinical remission, but a delayed response (> 3 months) was linked to SLE (p = 0.002) and anti-DNA antibodies (p = 0.003). LET usually associates with autoimmune disorders and autoantibodies. CD123 and DIF aid diagnosis, and systemic treatment may be needed, especially with SLE and anti-DNA antibodies.