Dr. Richard B Arenas MD

What are inverted nipples?Inverted nipples, also called as nipple retraction, nipple inversion, or invaginated nipple, is a condition in which the nipples point inward instead of out. In some women, nipple retraction can be present at birth. In some cases, the condition may develop due to trauma or...

Breast cancer is the most common type of cancer among American women, with the exception of skin cancers. It is also the second leading cause of death among women, after lung cancer. The American Cancer Society estimates that there are over 3.1 million breast cancer survivors in the United States,...

What is the gallbladder?The gallbladder is a four-inch, pear-shaped organ situated below your liver. It acts as a storage organ for bile, which is a mixture of fats, cholesterol, and fluids. The main purpose of bile is to help in breaking down fats during digestion. The whole process allows for easy...

There are various treatment options for bladder cancer. Each option has its own procedure on how it is carried out. The type of treatment is also chosen based on several factors such as:...

Melanoma is a serious skin cancer which arises from pigment cells called as melanocytes. An invasive form of melanoma is called nodular melanoma. Nodular melanoma is a serious skin cancer that got its name from the word "nodule", a doctor’s term for a lump as nodular melanoma lesions are shaped...

What is melanoma?Melanoma is a type of skin cancer that affects the melanocytes or the skin cells that contain the pigment melanin. It is caused when long or repeated exposure to UV radiation damages the DNA of these skin cells and causes them to divide uncontrollably forming a malignant tumor....