Early disease detection cannot be neglected in the healthcare domain and especially in the diseases where a person's
life is at stake. According to the WHO, if the diseases are predicted on time, then the death rates could reduce. The paper's goal
is to find out how to detect Breast Cancer, Skin Cancer, Lung Cancer, and Brain Tumor at the early stages with the help of Deep
Learning techniques. The authors of different papers have used different techniques and Algorithms like Adaptive Median
Filters, Gaussian Filters, CNN algorithms, etc.