Mouth ulcers are painful areas in the mouth and gums. They are also known as canker sores.

Posterior cervical lymph nodes, tonsils, thymus gland, lymphatic vessels and fluid, and all lymph nodes at the groin, underarm and in the neck form the lymphatic system. Lymphatic fluid collects components such as bacteria and protein from different parts of the body and transports them to the lymph nodes. Then the lymph nodes destroy and remove these components. Located above the neck’s base in a line that runs vertically at the back of the neck, these lymph nodes receive lymph from the head and neck area.

Eventually, the young girl starts to undergo the hormonal changes of becoming a woman and menstruation begins with development of breasts. These changes in the breast tissues will often include itching, pain, and other discomforts, particularly during the menstrual cycle. Sometimes lumps will develop and they can become tender or even painful, but this is actually fairly common and such developments are typically not related to cancer.