Thyroid adenoma laboratory findings

Thyroid adenoma Microchapters
Home
Patient Information
Overview
Historical Perspective
Classification
Pathophysiology
Causes
Differentiating Thyroid adenoma from other Diseases
Epidemiology and Demographics
Risk Factors
Screening
Natural History, Complications, and Prognosis
Diagnosis
Diagnostic Study of Choice
History and Symptoms
Physical Examination
Laboratory Findings
Electrocardiogram
X-ray
Echocardiography and Ultrasound
CT scan
MRI
Other Imaging Findings
Other Diagnostic Studies
Treatment
Medical Therapy
Surgery
Prevention
Cost-Effectiveness of Therapy
Future or Investigational Therapies
Case Studies
Case #1
Thyroid adenoma laboratory findings On the Web
Most recent articles
Most cited articles
Review articles
CME Programs
Powerpoint slides
Images
American Roentgen Ray Society Images of Thyroid adenoma laboratory findings All Images X-rays Echo & Ultrasound CT Images MRI
Ongoing Trials at Clinical Trials.gov
US National Guidelines Clearinghouse
NICE Guidance
FDA on Thyroid adenoma laboratory findings
CDC on Thyroid adenoma laboratory findings
Thyroid adenoma laboratory findings in the news
Blogs on Thyroid adenoma laboratory findings
Directions to Hospitals Treating Thyroid adenoma
Risk calculators and risk factors for Thyroid adenoma laboratory findings

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ammu Susheela, M.D. [2]

Overview

Laboratory findings consistent with the diagnosis of thyroid adenoma include decreased thyroid stimulating hormone, elevated calcitonin, and decreased calcium.

Laboratory Findings

• Blood or imaging tests may be done prior to or in lieu of a biopsy. The possibility of a nodule which secretes thyroid hormone (which is less likely to be cancer) or hypothyroidism is investigated by measuring thyroid stimulating hormone (TSH), thyroid hormones thyroxine (T4), and triiodothyronine (T3).
• Tests for serum thyroid autoantibodies are sometimes done to rule out autoimmune thyroid disease (which can mimic nodular disease).

• Laboratory findings consistent with the diagnosis of multiple endocrine neoplasia type 2 are tabulated below.

Laboratory findings

Test	Findings
Metabolic	Decreased thyroid stimulating hormone Antithyroid antibodies Elevated calcitonin Decreased calcium
Adapted from Arzu Tatlıpınar1 and İlkay Kartal [Updated 2015].The Evaluation of Thyroid Nodules. Journal of Thyroid Disorders & Therapy.2015.

Laboratory tests Normal Range Abnormal value Serum Thyroid stimulating hormone 0.4 - 4.0 milli-international units per liter <0.4 or >4.0 Antithyroid antibodies <35 IU/mL >35 IU/mL Serum calcitonin less than 10pg/mL >=100 pg/mL                           A patient with thyroid nodule                                                                                                                                                               Normal thyroid stimulating hormone               Low thyroid stimulating hormone                                                                                                                                   <1cm suspicious nodule     >1cm nodule           Thyroid nuclear scan                                                                                                                                                               Ultrasound guided fine needle aspiration cytology     Fine needle aspiration cytology       Hot nodule       Cold nodule                                                                                                                                                 Fine needle aspiration cytology                       References