What is a degenerative colloid nodule near thyroid?

Benign. This is a fluid filled thyroid nodule that is degenerating or in other words deteriorating on its own. It's completely benign and not worrisome in most cases. However just remember that fnas (fine needle aspirations) are accurate in 90-95% of cases.
Thyroid Nodules. You probably mean..What is a dcn in the thyroid gland. Let me give you enough information so you will understand the pieces to this puzzle..There are many types and causes for nodules in the thyroid. They have varied significance- http://www.Emedicinehealth.Com/thyroid_nodules/page2_em.Htm dr. P.