Search

Background: Vascularized composite allotransplantation (VCA) is a modern option for the treatment of functionally significant limb and tissue defects. In our study we aimed to characterize the morphological and histological features of the hand transplant recipient skin rejection., Material and Methods: We clinically evaluated the skin and mucous membranes and microscopically assessed biopsies taken from the patient's own skin and from the allogenic grafted limb (n=5). We also performed immunohistochemistry for presence of T lymphocytes (CD3, CD4, and CD8), B lymphocytes (CD20), macrophages (CD68), Langerhans cells (CD1a+), plasmacytoid dendritic cells (pDCs) (CD123+) and 6-sulfo LacNAc+ dendritic cells (slanDCs) (DD2+)., Results: Only scattered pDCs were present in both own and skin grafts. The number of LC in the epidermis was higher in graft skin in all cases and CD1a+ cells were also present in the dermis in transplanted skin in patients with grade 1 rejection. Most interestingly, we identified far increased numbers of dermal slanDCs in the grafted skin. SlanDCs have a high capacity to produce proinflammatory cytokines and have been described as inflammatory dermal dendritic cells in psoriasis and lupus erythematosus., Conclusions: It may be hypothesized that slanDCs identified in the skin after limb transplantation may support the local inflammatory skin reaction.

Background: Sarcoidosis, characterized by non-caseating epithelioid granulomas, presents diagnostic and therapeutic challenges. Method: Here we present a 38-year-old woman who exhibited erythematous and infiltrated skin lesions on her facial region following fractional laser treatment. Results: Histological analysis confirmed cutaneous sarcoidosis. Initial interventions with topical clobetasol and oral chloroquine provided transient relief. Subsequent outpatient management comprised topical tacrolimus and clobetasol, as well as systemic methotrexate, later substituted with prednisone. Gradual tapering resulted in lesion reduction. Conclusions: This case underscores the intricate nature of cutaneous sarcoidosis and the necessity for personalized therapeutic approaches. The association with cosmetic procedures highlights the importance of understanding potential triggers. The presented case highlights and reminds the medical community that lasers are not only used for therapeutic purposes but can also induce specific responses through laser therapy. Notably, while laser therapy is frequently employed in treating cutaneous sarcoidosis, its role in inducing sarcoidosis warrants further investigation. [ABSTRACT FROM AUTHOR]

A 30-year-old male patient has been reported, who was admitted because of multiple, symmetric, confluent brownish papules localized primarily on the shoulders, and gradually extended to the arms, back and front of chest. Lesions developed over a period of 10 years and were accompanied by severe pruritus. Based on the clinical presentation and the results of histological examination, showing positive staining for amyloid, a lichen amyloidosus was diagnosed. The patient was treated with photochemotherapy, topical corticosteroids and antihistaminic drugs. [ABSTRACT FROM AUTHOR]