Chemotherapy-induced inflammation of actinic keratosis can present in patients with subclinical actinic keratoses that become erythematous and pruritic within weeks of initiating systemic chemotherapy. The reaction is limited to sun-exposed areas and, classically, histologic findings of parakeratosis and epidermal necrosis with keratinocyte nuclear pleomorphism are present. Exuberant reactions ...

Current trends in our setting indicate that the prevalence of actinic keratosis and similar diseases will increase in coming years and impose a greater burden on health care resources. A long list of clinical features must be taken into account when approaching the treatment of actinic keratosis. Until recently, therapeutic approaches focused solely on ablative procedures and the treatment of i...

In actinic cheilitis, the current view is that the keratinocytes have undergone transformation forming a field of epithelium with the potential for neoplastic transformation. Clinical features include diffuse and poorly demarcated atrophic, erosive or keratotic plaques that may affect some parts of, or the entire vermilion border. Fair-complexioned people, those with albinism and people with ev...

We report here a rare case of porokeratosis in which two different clinical types of porokeratosis (linear porokeratosis and disseminated superficial actinic porokeratosis) coexisted. A 7-year-old girl developed a centrifugal lesion on her left abdomen at the age of 2, disseminated superficial actinic porokeratosis on her face at the age of 3 after ultraviolet exposure, and linear porokeratosis...

Introduction. It is rare for actinic or squamous cell carcinoma (SCC) in situ to metastasize. Case Presentation. A 67-year-old male had a significant medical history including severe psoriatic arthritis treated with UVB, methotrexate, and rapamycin. He had twenty-five different skin excisions of actinic keratosis four of which were invasive SCC. Our patient developed shortness of breath necessi...

An empirical approach for the retrieval of nitrogen dioxide (NO2) and formaldehyde (HCHO) photolysis frequencies from measurements of global irradiance is presented in this work. Four months of synchronous measurements of actinic flux and global irradiance performed in Thessaloniki, Greece by a Bentham spectroradiometer were used to extract polynomials for the conversion of global irradiance to...

BACKGROUND Chronic actinic cheilitis is actinic keratosis located on the vermilion border. Treatment is essential because of the potential for malignant transformation. OBJECTIVE To evaluate the aesthetic and functional results of vermilionectomy using the classic and W-plasty techniques in actinic cheilitis. In the classic technique, the scar is linear and in the W-plasty one, it is a broken...

illions of vacationers deliberately expose themselves to excessive UV radiation. As a result, the risk of UVrelated skin damage is rapidly increasing. Sun worshippers thus have to expect an increased risk for actinic keratoses (a carcinoma in situ). Most recent estimates prove that about 8 million Germans suffer from actinic keratoses. There is an estimated prevalence of about 15 percent among ...

While actinic keratoses (AKs) have a known association with cutaneous squamous cell carcinoma (SCC), the relation of actinic field change to SCC has not been quantified. This study investigated the presence of field change and AKs in renal transplant recipients (RTRs) and estimated SCC risk. In May 2010 to October 2011, a dermatologist examined 452 white RTRs (mean age 53 years) at two hospital...