Riedel's Thyroiditis in an Elderly Male Patient: A Rare Entity

Area of Science:

• Endocrinology
• Pathology

Background:

• Riedel's thyroiditis (RT) is a rare fibrosclerotic infiltrative thyroid disorder with an unclear cause.
• It is infrequently encountered, representing 0.06% of thyroid surgeries, and predominantly affects women.

Observation:

• A 60-year-old male presented with a three-year history of thyroid swelling, sinus discharge, pain, and fever.
• Physical examination revealed a firm to hard thyroid lobe with resistance to cutting.
• Microscopic analysis showed colloid-filled follicles, dense fibrosis, lymphocytic aggregates, and perivascular fibrosis.

Findings:

• Histopathological examination confirmed the diagnosis of Riedel's thyroiditis.
• The characteristic fibrotic changes and inflammatory infiltrates were key diagnostic markers.

Implications:

• Riedel's thyroiditis diagnosis necessitates surgical thyroidectomy for definitive histopathological confirmation.
• Early and accurate diagnosis is crucial for appropriate patient management and to rule out other thyroid pathologies.