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<p>In 2% cases of mediastinal masses thyroid tissue can be an aetiology. Thyrothymic thyroid rest (TTR) is a thyroid tissue deposited along its embryological path. These TTRs can give rise to various pathologies like goiter, malignancy, etc. Herewith we describe a very rare case of largest intrathoracic TTR tissue presenting with SVC (superior vena cava) compression. The 35-year-old young female presented with neck swelling and facial puffiness. CT scan revealed large superior mediastinal mass compressing other mediastinal structures and extending into the neck. Clinico-radiologically, this mass was completely different from normal thyroid. It can be labelled as grade IV or V TTR. The patient underwent median sternotomy and mass excision with uneventful outcome. TTR can occasionally present with an enormous size in mediastinum compressing other mediastinal structures.</p>

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Rare Case of A Largest Intrathoracic Thyrothymic Thyroid Rest (TTR) with SVC Compression

  • 期刊论文

  • 发表日期：

    2025年8月18日

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  • Rahulkumar Chavan,
  • Nandkishor Narwade,
  • Sameer Kadam,
  • Shradha Bhone

摘要

In 2% cases of mediastinal masses thyroid tissue can be an aetiology. Thyrothymic thyroid rest (TTR) is a thyroid tissue deposited along its embryological path. These TTRs can give rise to various pathologies like goiter, malignancy, etc. Herewith we describe a very rare case of largest intrathoracic TTR tissue presenting with SVC (superior vena cava) compression. The 35-year-old young female presented with neck swelling and facial puffiness. CT scan revealed large superior mediastinal mass compressing other mediastinal structures and extending into the neck. Clinico-radiologically, this mass was completely different from normal thyroid. It can be labelled as grade IV or V TTR. The patient underwent median sternotomy and mass excision with uneventful outcome. TTR can occasionally present with an enormous size in mediastinum compressing other mediastinal structures.