Clinical-Dermoscopic-Histopathological Correlations in Collision Skin Tumours.

Objectives: Collision tumours are rare situations characterised by the coincidence of two different skin neoplasms in the same lesion.

Methods: We have analyzed 41 collision skin tumours from one department in the clinical-dermoscopic-histopathologic correlations.

Results: We present 41 collisions tumours.

Stewart-Treves syndrome: Case report and literature review.

Lymphangiosarcoma, or Stewart-Treves Syndrome (STS), is a very rare skin angiosarcoma with poor prognosis, which usually affects the upper limbs of patients who underwent breast cancer surgery, including axillary dissection followed by radiotherapy (RT). Cutaneous lymphangiosarcomas, which account for approximately 5% of all angiosarcomas, usually originate in the limb with chronic lymphedema. Lymphatic blockade is involved in the onset of STS.

The use of 2940-nm ER:YAG laser for the treatment of lentigo maligna.

Objectives: Lentigo maligna is a common in situ malignancy in elderly patients, with a low risk of progression to an invasive tumor. Surgical treatment may be complicated or refused. Non-surgical treatment options (such as lasers) may therefore be needed.