Hashimoto Thyroiditis Coexisting With Breast Fibroadenoma.

Area of Science:

• Endocrinology
• Oncology

Background:

• A 34-year-old female presented with a year of worsening fatigue.
• She had co-existing multiple breast nodules undergoing simultaneous investigation.

Observation:

• Ultrasound revealed a heterogeneous parenchymal ectopic pattern suggestive of thyroiditis.
• Laboratory tests indicated elevated thyroid-stimulating hormone (TSH), anti-thyroglobulin, and anti-thyroid peroxidase antibodies.

Findings:

• The patient was diagnosed with autoimmune thyroiditis and prescribed 50 µg/day of levothyroxine sodium.
• Follow-up after two months showed normalized TSH levels.
• Breast nodules were diagnosed as fibroadenomas without atypia or malignancy.

Implications:

• This case highlights the importance of investigating fatigue in patients with concurrent breast conditions.
• Early diagnosis and treatment of autoimmune thyroiditis can effectively manage symptoms.
• Benign breast conditions like fibroadenoma require careful monitoring but do not preclude other diagnoses.