Oregon Written Tattoo Practice Test

Which type of skin cancer is considered the most aggressive?

1. Malignant Melanoma

2. Sebaceous

3. Basal Cell Carcinoma

4. Lipoma

The correct answer is: Malignant Melanoma

Malignant Melanoma is recognized as the most aggressive type of skin cancer primarily due to its ability to grow rapidly and spread to other parts of the body, including vital organs. This aggressive nature stems from the fact that it arises from melanocytes, the pigment-producing cells in the skin, which can accumulate mutations that allow the cancer to invade nearby tissues and metastasize through the bloodstream or lymphatic system. The concern with malignant melanoma lies in its potential to develop from existing moles or appear as new unusual growths on the skin, often characterized by asymmetry, irregular borders, multiple colors, and a diameter larger than that of a pencil eraser. Early detection and treatment are crucial since the prognosis worsens significantly once it has spread beyond the skin. In contrast, the other options listed do not exhibit the same level of aggressiveness. Basal Cell Carcinoma, while common, tends to grow slowly and rarely metastasizes. Sebaceous tumors can vary but are generally not aggressive in nature, and lipomas are benign tumors composed of fatty tissues that typically do not pose serious health risks. Thus, malignant melanoma stands out as the most concerning form of skin cancer due to its aggressive behavior and potential for widespread impact.