PURPOSE Actinic keratosis (AK) is an incipient form of cutaneous squamous cell carcinoma (SCC). We determined if the pattern of expression of keratin-14 (K14) is a factor for tumor progression in AK and SCC. MATERIALS AND METHODS Eighteen sections from the tissues of 16 patients were stained with anti-K14 antibody and p16(INK4a). Among the 16 patients, 4 were diagnosed with both SCC and AK at...

Squamous cell carcinoma (SCC) of the skin is a malignancy arising from epithelial keratinocytes. Experimental and epidemiologic evidence raise the possibility that human polyomaviruses (PyV) may be associated with the occurrence of SCC. To investigate whether the risk for SCC was associated with PyV infection, seropositivity to 10 PyV types was assessed following diagnosis in a population-based...

Immune suppressed organ transplant recipients suffer increased morbidity and mortality from primary cutaneous SCC. We studied tumor microenvironment in transplant-associated SCC (TSCC), immune-competent SCC and normal skin by IHC, IF and RT-PCR on surgical discard. We determined T cell polarization in TSCC and SCC by intracellular cytokine staining of T cell crawl outs from human skin explants....

background: heat shock proteins (hsps) are a family of proteins that are known to play a significant role in the repair of denatured proteins in the cell. it seems that cytoprotective properties of hsps may help in malignant progression by facilitating tumor cell growth and survival. the purpose of this study is to evaluate hsp27 and hsp70 expression in various histopathological grades of squam...

Cutaneous squamous cell carcinoma (SCC) is one of the common cancers in Caucasians, accounting for 20-30% of cutaneous malignancies. The risk of metastasis is low in most patients; however, aggressive SCC is associated with very high mortality and morbidity. Although cutaneous SCC can be treated with surgical removal, radiation and chemotherapy singly or in combination, the prognosis of patient...

Actinic keratosis (AK) is a common, sun-induced, pre-malignant lesion with a strong likelihood of progressing to a malignancy. The reported risk of AK progressing to squamous cell carcinoma (SCC) varies from less than 1% to 20%. Clinically, induration, pain, large size, marked hyperkeratosis, ulceration, bleeding, rapid growth, and recurrence or persistence may be markers of AK progression into...

HNSCC: head and neck SCC SCC: squamous cell carcinoma SSS: secondary SCC of the skin INTRODUCTION Metastatic squamous cell carcinoma (SCC) to the skin, also known as secondary SCC of the skin (SSS), is a rare entity that represents advanced disease and carries a poor prognosis. The most commonly reported primary sources for metastatic SCC to the skin are head and neck cancers of the larynx, oro...