Electron transfer is usually difficult to see in the organic. reactant(s) and product(s) in an organic redox reaction. For example the conversion of a 2Â°. alcohol to a ketone (Figure 17.003) is oxidation, but it is not obvious that electron transfer has. occurred by looking at the alcohol and ketone structures. Figure 17.003. This electron transfer is generally visible, however, in the inorganic reagents and products of.
Other lesions, such as basal cell carcinoma, squamous cell carcinoma, melanoma, and Kaposiâs sarcoma are malignant, and early diagnosis and treatment can prevent metastasis, which. can be life threatening. Benign and pre-cancerous lesions.
Malignant lesions of the skin are common. Patients who develop squamous cell carcinoma and malignant melanoma often have recognizable precursor conditions. A few skin lesions resemble malignancies. variety of skin lesions are considered precursors of squamous cell carcinoma. Actinic keratosis appears very similar to the less severe lesions of squamous cell carcinoma. It is always found on skin that has received heavy exposure to sunlight.