Endocrine System

{"ops":[{"insert":"Diagnosis and reasoning"},{"insert":"\n","attributes":{"header":1}},{"insert":"The adult patient with a neck mass is a fairly common presentation in both primary care and otolaryngology.\n\nIt is also a presentation which is all too easy to misdiagnose if not approached in a systematic manner; appreciation of the anatomy of the head and neck is essential.\n\nThus, in this patient, examination reveals the neck mass to be located in the right submandibular region; key structures in this area include the submandibular gland, and the lymph nodes of the submandibular triangle.\n\nIn an adult over 40 years of age, a submandibular neck mass should be assumed to be malignant until proven otherwise; note that the commonest malignancy encountered in this region is metastatic disease involving one or more lymph nodes.\n\nOther, less com"}]}

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