Are there lymph nodes on the arms?

Lymph nodes are distributed throughout our body, with the most being in our neck and abdomen. We also have lymph nodes in other parts of our body, but the number is relatively small. Sometimes we can feel some small lumps on our arms, which are lymph nodes. They contain many lymphocytes. If there is inflammation in the body, these lymph nodes will swell.

The lymphatic system is the body's natural defense against infection and toxins. Groups of superficial lymph nodes are found in the neck, armpits, groin, behind the knees, and in front and behind the ears.

The most common cause of swollen lymph nodes in children is infection. The location of the swelling depends on the location of the infection. Throat and ear infections may cause swollen lymph nodes in the neck. Head infections may cause swollen lymph nodes behind the ears. Infections in the hands or arms may cause swollen lymph nodes under the armpits. Infections in the feet and legs may cause swollen lymph nodes in the groin.

The lymph nodes on the arm are generally distributed in the antecubital fossa and axilla. The antecubital lymph nodes are located above the medial epicondyle of the humerus, near the basilic vein, and are also known as supratrochlear lymph nodes. The axilla is distributed with nerves and blood vessels that supply the upper limbs. There are also lymph node groups in the axilla, which collect lymph from the upper limb chest wall and superficial layer of the back.

Yes, the nodes are all over the body, and only the more superficial parts can be touched. The neck, submandibular area, supraclavicular fossa, axilla, and groin are easiest to feel. When the lymph nodes are swollen, round, oval or cord-like nodules can be felt under the skin. If you feel swollen lymph nodes under the jaw, it means there is a lesion in the mouth. Such as tonsillitis, periodontitis, etc. When a spherical lump appears on the neck, cervical tuberculosis should be considered first.

Patients with nasopharyngeal carcinoma can often feel swollen lymph nodes in the neck. Swollen lymph nodes in the armpit often indicate disease in the upper limbs or breasts. Swollen inguinal lymph nodes are a sign of infectious disease in the lower limbs and buttocks. In addition, people are reminded not to ignore the pathological reactions caused by uterine cancer, testicular cancer, and rectal cancer. Enlarged left supraclavicular lymph nodes usually indicate that cancer cells in the abdominal cavity have metastasized along the thoracic duct. Such as liver cancer, stomach cancer, colon cancer, etc.

Enlarged right supraclavicular lymph nodes indicate that cancer cells in the chest cavity have metastasized upward along the right lymphatic vessels. Such as lung cancer, esophageal cancer, etc. When suffering from lymphocytic leukemia, lymph nodes throughout the body will become swollen. The lymphatic system is an auxiliary system of the cardiovascular system, assisting the veins in draining tissue fluid. In addition, lymphoid tissue and lymphoid organs have the functions of producing lymphocytes, filtering lymph and conducting immune responses. Lymph nodes are usually arranged along the veins.

Most of the head lymph nodes are located at the junction of the head and neck: occipital lymph nodes (located on the surface of the origin of the trapezius muscle and deep to the splenius capitis muscle), mastoid lymph nodes (located on the surface of the insertion point of the sternocleidomastoid muscle), parotid lymph nodes (located on the surface of the parotid gland and in the parotid gland substance), submandibular lymph nodes (located near the submandibular gland and in the submandibular gland substance), and submental lymph nodes (located under the chin). The cervical lymph nodes are divided into two groups: the anterior cervical lymph nodes and the lateral cervical lymph nodes.

Anterior cervical lymph nodes (arranged along the external jugular vein, in front of the larynx, in front of the isthmus of the thyroid gland, in front of the tracheal neck, and in the groove between the trachea and esophagus). Lateral cervical lymph nodes (along the internal jugular vein, along the accessory nerve and transverse cervical vessels, in front of the anterior scalene muscles, between the posterior pharyngeal wall and prevertebral fascia).