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[Amyloid goiter. Report of two cases]
L Martin1, G Viennet, G Mantion
1Laboratoire d'Anatomie et de Cytologie Pathologiques, CHU Jean Minjoz, Besançon.
Annales De Pathologie
|February 21, 1998
Summary
Two cases of amyloid goiter mimicked cancer clinically. Histologic examination and immunohistochemistry revealed primary amyloidosis in one patient and amyloid goiter secondary to renal insufficiency in the other.
Area of Science:
- Endocrinology
- Pathology
- Nephrology
Background:
- Amyloid goiter is a rare condition that can present with clinical features mimicking neoplastic lesions of the thyroid.
- Distinguishing amyloid goiter from thyroid cancer is crucial for appropriate patient management.
Observation:
- Two cases of amyloid goiter are presented, both initially suspected of having a neoplastic lesion based on clinical presentation.
- Diagnostic challenges included differentiating the benign amyloid infiltration from malignant thyroid tumors.
Findings:
- Histologic examination was essential for definitive diagnosis in both cases.
- Immunohistochemistry identified the amyloid precursor, revealing primary amyloidosis in one case.
- The second case demonstrated amyloid goiter attributed to underlying renal insufficiency.
Implications:
- This report highlights the importance of considering amyloid goiter in the differential diagnosis of thyroid masses.
- Understanding the precursor type and underlying cause (primary vs. secondary to renal insufficiency) is key for accurate diagnosis and management.
- Histopathology and immunohistochemistry are critical tools for elucidating the nature of amyloid deposition in the thyroid.