👉 The term "cephhalohumeral" is a medical term that refers to the formation of a large, bulging lobe in the neck. It can be caused by various factors such as trauma, infection, or tumors. The lobe may be located anywhere on the neck, but it tends to form particularly around the base of the skull and the collar bone. This condition is often referred to as a "cephhalohumeral mass" or "cephhalo-humeral cyst