There's a bag behind the cervical spine. What's going on?

There is a bag behind the cervical spine that may be a normal anatomical structure, or may be caused by a disease, such as lipoma, sebaceous cyst, boil, etc., need to seek medical attention in time to determine the cause. There is a bag behind the cervical spine that may be a normal anatomical structure, or may be caused by a disease. The following are some possible causes: Normal anatomical structure: There are some normal bony processes and muscle tissue behind the cervical spine, such as the spinous process of the seventh cervical spine, which is long and unbranched at the end and is easily felt under the skin. It looks like a bag. Lipoma: A benign tumor that can occur anywhere on the body that has fat. If lipoma is located behind the cervical spine, a bag may form. Sebaceous cyst: A retention cyst formed when the sebaceous gland cystic epithelium is inflated by its increasing contents due to obstruction of the sebaceous gland excretory duct. A cyst may also appear if it occurs behind the cervical spine. Boils: An infection of purulent hair follicles and deep surrounding tissue. If furuncle occurs in the back of the cervical spine, there will also be a bag, accompanied by redness, pain and other symptoms. Other: The bag behind the cervical spine may also be lipoma, fibroma, lymphoma, metastasis, etc. If you find a bag behind the cervical spine, you need to seek medical attention in time and conduct relevant examinations, such as X-ray, CT, MRI, etc., to clarify the nature and cause of the bag. If it is caused by a disease, it needs to be treated promptly. If it is a normal anatomical structure, no special treatment is required. In addition, for some special groups, such as children, the elderly, people with immune system diseases, etc., if a bag is found behind the cervical spine, it needs to be paid more attention and treated promptly so as to detect and treat the underlying disease early.