A member asked:

What is parenchymal disease for thyroid?

2 doctors weighed in across 2 answers

Tissue cells: Hi. Parenchymal just means "of or regarding the cells that define the tissue". Like the hepatocyte is the parenchymal cell of the liver and the neuron the parenchymal cell of the nervous system, the thyroid follicular cell is the tissue-defining cell of the thyroid. Most diseases that affect it are autoimmune, although a large subset also includes neoplasia (benign and malignant changes).

Answered 7/9/2018

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Thyroid: Parenchyma means "the functional tissue of an organ as distinguished from the connective and supporting tissue." so when you say you have "parenchymal disease of the thyroid" it does NOT mean much. There are several different types of thyroid diseases, to name some: Graves disease, thyroiditis, thyroid nodule, etc. Have your doctor give you more details or see an endocrinologist

Answered 9/20/2019

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