Eradication of basal cell carcinoma of the head and neck using the surgical excision with a new stained margin technique: a preliminary study.

Background: Basal cell carcinomas (BCCs) are common cutaneous neoplasms that mainly affect fair-skinned subjects, in sun-exposed areas of the body. The treatment of choice of BCCs is represented by surgical excision and different techniques are available, in order to allow the complete eradication of the tumor with the best cosmetic results. In this paper, we describe the surgical excision with stained margin technique (SMET) and we report its efficacy for the treatment of BCCs of the head and neck region.

Mycobacterium ulcerans mycolactone interferes with adhesion, migration and proliferation of primary human keratinocytes and HaCaT cell line.

The pathogenicity of Mycobacterium ulcerans (Buruli ulcer) is closely associated with the secretion of exotoxin mycolactone. The cytotoxicity of mycolactone has been linked to its apoptogenic activity. We explored if low mycolactone concentrations, which are not able to induce apoptosis, can influence other essential activities on two primary human keratinocyte populations, keratinocyte stem cells (KSC) and transit amplifying cells (TAC), and on a human keratinocyte line, HaCaT.

Clinical considerations on Buruli ulcer employing two molecular tests for the detection of Mycobacterium ulcerans in 100 skin biopsies.

Objectives: Buruli ulcer (BU) is an infected cutaneous lesion, the etiological agent of which is Mycobacterium ulcerans. Diagnosis is confirmed by the identification of acid-fast bacilli and culture. In clinically suspicious forms with negative bacteriological or Ziehl-Neelsen (ZN) findings, molecular tests are used.

Apoptosis in Buruli ulcer: a clinicopathological study of 45 cases.

Aims: To investigate the presence and pathogenetic role of apoptosis in Buruli ulcer (BU), a highly destructive skin disease caused by Mycobacterium ulcerans.

Methods And Results: Forty-five skin biopsies obtained from 30 Beninese patients affected by BU, in different clinical and therapeutic periods, were analysed for the main histopathological features (inflammatory infiltration, necrosis, sclerosis, oedema, granulomas and nerve damage). Immunofluorescent detection of antigens (anti-Bax, anti-caspases-3 and -8), together with deoxyuridine, 5'-triphosphate (dUTP) nick end labelling (TUNEL) assay, were also performed.

Basal cell carcinoma of the head region: therapeutical results of 350 lesions treated with Mohs micrographic surgery.

Background: Basal cell carcinoma (BCC) is a non-melanocytic skin tumour with a high risk of recurrence after incomplete treatment, especially the aggressive subtypes (basosquamous, micronodular and morphea BCC). The percentage of recurrence also depends on the anatomical site of the tumour. Nose-cheek fold, paranasal fold, retroauricular fold and internal canthus are considered to be critical sites.