[Amyloid goiter].

Area of Science:

• Endocrinology
• Pathology

Background:

• Amyloid goitre is a rare manifestation of amyloidosis, a systemic or localized condition.
• It can arise from primary or secondary causes, impacting thyroid gland function and structure.

Observation:

• Diagnosis involves clinical presentation (rapid growth, diffuse appearance), anamnestic data, imaging, and aspirate analysis.
• Histology confirms the final diagnosis of amyloid goitre.
• A specific case presented with chronic superior vena cava syndrome and chylous pleural effusion as initial symptoms.

Findings:

• The patient exhibited asymptomatic hyperthyroxinaemia.
• No other organ involvement or primary amyloidosis was detected during an 18-month follow-up.
• The case was classified as secondary and localized amyloidosis.

Implications:

• Surgical intervention for amyloid goitre aims to alleviate mass effects.
• Patient outcomes are primarily determined by systemic amyloidosis, not thyroid surgery.
• Early diagnosis and management of associated symptoms are crucial for patient prognosis.