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Riedel Thyroiditis (Comprehensive Profile)

Rare invasive fibrosing thyroiditis often within the IgG4-related disease spectrum.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Endokrinoloji department. Book Appointment →

What is Riedel Thyroiditis (Comprehensive Profile)?

Riedel thyroiditis (invasive fibrous thyroiditis) is a rare disorder in which dense fibrous tissue replaces normal thyroid parenchyma and extends into surrounding strap muscles, trachea, esophagus and recurrent laryngeal nerves.

It is now widely considered part of the IgG4-related disease spectrum, frequently coexisting with retroperitoneal fibrosis, sclerosing cholangitis and orbital pseudotumor. Most patients are middle-aged women.

The hallmark is a stony-hard, painless goiter that grows over weeks to months, with compressive symptoms preceding overt thyroid dysfunction. Definitive diagnosis usually requires open biopsy because fine-needle aspiration is non-diagnostic.

Symptoms

Rock-hard, fixed anterior neck mass
Pressure sensation and fullness
Dysphagia and odynophagia
Dyspnea and stridor
Hoarseness from recurrent laryngeal nerve involvement
Hypoparathyroidism with tetany
Progressive hypothyroidism in late stages

Risk Factors

Female sex (3-4:1 ratio)
Age 30-60 years
Pre-existing IgG4-related disease
Multifocal idiopathic fibrosclerosis
Autoimmune thyroid background
Prior orbital pseudotumor or retroperitoneal fibrosis
Family history of fibrosing disorders

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Rapidly enlarging hard neck mass
  • New onset of stridor or dyspnea
  • Severe dysphagia or weight loss
  • Hoarseness lasting more than 2 weeks
  • Tetany or paresthesia after thyroid surgery
  • Suspected coexisting fibrosing disease elsewhere

Treatment Methods

01
Long-course oral glucocorticoids as first-line therapy
02
Tamoxifen for steroid-resistant cases
03
Rituximab in IgG4-related variants
04
Methotrexate or azathioprine as steroid-sparing agents
05
Levothyroxine replacement for hypothyroidism
06
Calcium and vitamin D for hypoparathyroidism
07
Surgical isthmusectomy to relieve airway compression
08
Tracheostomy in life-threatening obstruction

Which Department to Visit?

You can visit our Endokrinoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.