This mass can be detected and removed before transformation and metastasis. The tumor is often detected by imaging such as ultrasound. The location and size of the tumor may cause pressure and pain to the patient. But often the tumor goes undetected. After detection, the mass is tested using an invasive fine-needle aspiration biopsy.<unk>  is the benign analogue of<unk>  cell carcinoma. This adenoma is extremely rare; when it occurs, it usually occurs in women. Often the adenoma is harmless but is removed after detection because its future course cannot be trusted.
Hürthle cell adenoma
Metanephric adenoma
Nephrogenic adenoma
Pleomorphic adenoma
Pituitary adenoma
Adrenocortical adenoma
Granular cell tumor
Primary pigmented nodular adrenocortical disease