Causes of a goiter include an imbalance in the thyroid gland and Goiter symptoms generally occur in a gland that is overactive, producing too much hormone (hyperthyroidism), or that is underactive, producing too little hormone (hypothyroidism).
ICD-9 170.3 is malignant neoplasm of ribs, sternum, and clavicle (1703). This code is grouped under diagnosis codes for neoplasms.
Solar keratoses are pre-cancerous (pre-malignant), which means they have a potential to turn into skin cancers called squamous cell carcinomas. Squamous cell carcinoma if left untreated can spread internally to the lymph nodes and other organs, requiring more extensive surgery and/or radiotherapy. Squamous cell carcinomas can be fatal in some cases. The exact risk of a solar keratosis turning into a skin cancer is not known.