Small papular pseudolymphoma induced by a patch test for gold

Pseudolymphoma induced by gold after patch testing: Dermoscopic features

“…Previously recorded cases of this condition are summarised in Table 1. [2][3][4] The present case highlights two pseudolymphomatous lesions after contact with two different gold sodium thiosulfate patches on the same patient.…”

“…Clinical reports of the latter are scarce. [2][3][4] Thus, this report highlights a case of pseudolymphoma after patch testing to gold sodium thiosulphate and performs a literature review of previously described cases.…”

“…Histologically a dense lymphoid infiltrate is classically composed of a mixture of CD20-positive and CD3-positive cells. [2][3][4] In terms of treatment, the response to topical steroids seems inconsistent, however, aggressive options should be avoided considering the indolent behaviour.…”

Multiple cutaneous T‐cell pseudolymphomas induced by acrylates on patch testing: A case report

“…We found 10 other cases of patch test‐induced pseudolymphomas with four allergens implicated: gold sodium thiosulfate (7/10), 3–7 minoxidil (2/10), 8,9 and only one case induced by methacrylates 10 . While all cases involved one single allergen, the latter involved both HEMA and HPMA.…”

Cutaneous pseudolymphoma after patch test to gold sodium thiosulfate in two patients

“…CPsL secondary to gold has been described at the site of piercing and following intradermal testing, acupuncture, and eyelids implants. With regard to patch tests, a pseudolymphomatous reaction with persistent exposure to GST has been described in a few previous reports, although immunohistochemical techniques were not always employed . Likewise, one case of CPsL has been recently reported in a long‐lasting allergic patch test reaction with topical minoxidil 5% .…”