Hi,
A lump on the base of the neck can have several causes, including
swollen lymph nodes, cysts, abscesses,
lipomas (benign fatty tumors), or rare instances of cancer. Swollen lymph nodes are a common cause of lumps on the neck and can be due to a variety of reasons, including infection, inflammation, or cancer. The lump may be tender or painful, and the surrounding area may be red or warm.
Cysts are another possibility and are often filled with fluid or pus. They can be caused by blockages in the oil glands or hair follicles in the skin. Abscesses are similar to cysts but are usually larger and more painful. They are filled with pus and require medical attention to prevent complications.
Lipomas are usually benign fatty tumors that can develop anywhere in the body. They are usually painless and do not require treatment unless they grow too large or become bothersome. Given the recent car accident and her leg
injury, it is possible that the lump on the base of her neck could be related to the accident or could be a separate issue. She must seek medical attention as soon as possible to determine the cause of the lump and to receive appropriate treatment.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Priyanka, General & Family Physician