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Hyperthyroidism II: Pathophysiology

Hyperthyroidism II: Pathophysiology

Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH receptors...

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Graves Disease II: Pathophysiology

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Spontaneous Murine Model of Anaplastic Thyroid Cancer

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[Atypical thymic carcinoid with hypercalcemia].

Jun Yamamoto¹, Masaoki Shimanouchi, Yoshiaki Ueda

¹Department of Thoracic Surgery, Ibarakihigashi National Hospital, Ibaraki, Japan.

Kyobu Geka. the Japanese Journal of Thoracic Surgery

|December 4, 2012

Summary

This summary is machine-generated.

A rare case of atypical thymic carcinoid with hypercalcemia highlights the importance of considering thymic carcinoid and hyperparathyroidism in anterior mediastinal tumors.

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Area of Science:

Endocrinology
Thoracic Surgery
Oncology

Background:

Anterior mediastinal masses can present with complex endocrine abnormalities.
Atypical thymic carcinoid is a rare neuroendocrine tumor with potential for hormonal secretion.

Observation:

A 76-year-old male presented with a growing anterior mediastinal mass.
Chest CT revealed a 4.0 cm anterior mediastinal mass.
The patient exhibited preoperative hypercalcemia with elevated intact-parathyroid hormone (PTH), prolactin, and gastrin levels.

Findings:

Postoperative histopathology confirmed an atypical carcinoid of the thymus.
Parathyroid scintigraphy identified a parathyroid tumor.
The patient underwent extended total thymectomy and adjuvant mediastinal irradiation.

Implications:

This case underscores the association between atypical thymic carcinoid and primary hyperparathyroidism.
It emphasizes the need for thorough endocrinological evaluation in patients with anterior mediastinal tumors and hypercalcemia.
Early diagnosis and multimodal treatment, including surgery and irradiation, can lead to favorable outcomes.