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Related Concept Videos

Barrett Esophagus-II: Clinical Manifestations and Management01:21

Barrett Esophagus-II: Clinical Manifestations and Management

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Individuals with Barrett's esophagus are often asymptomatic, but they may experience symptoms commonly associated with GERD, such as heartburn and acid regurgitation. Additional symptoms can include difficulty swallowing, chest pain, unintentional weight loss, blood in the stool (which may appear black, tarry, or bloody), and episodes of vomiting.
To diagnose Barrett's esophagus, healthcare providers often recommend an endoscopy for those showing symptoms of acid reflux. The procedure...
168

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Related Experiment Video

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Substernal Thyroid Biopsy Using Endobronchial Ultrasound-guided Transbronchial Needle Aspiration
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Unencapsulated thymoma: a case report.

Saki Yamamoto1, Eiki Mizutani1, Riichiro Morita1

  • 1Department of Thoracic Surgery, Tokyo Yamate Medical Center, 3-22-1 Hyakunin-cho, Shinjuku-ku, Tokyo, 169-0073, Japan.

Journal of Surgical Case Reports
|October 17, 2023
PubMed
Summary
This summary is machine-generated.

This study reports the first case of an unencapsulated thymoma, larger than microthymomas. This finding expands the understanding of thymoma presentation and capsule formation in mediastinal tumors.

Keywords:
microthymomathymomaunencapsulated

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Area of Science:

  • Oncology
  • Pathology

Background:

  • Thymomas are the most common mediastinal tumors, typically encapsulated.
  • Unencapsulated thymomas, or microthymomas, are rare and poorly documented.

Observation:

  • A case of an 18 mm unencapsulated thymoma in a 42-year-old female is presented.
  • Imaging revealed an anterior mediastinal nodule with specific MRI characteristics.
  • Histopathology confirmed a type B1 thymoma lacking a fibrous capsule and invading surrounding fat.

Findings:

  • This is the first reported case of an unencapsulated thymoma exceeding the size typically associated with microthymomas.
  • The tumor was found within thymic tissue, without a capsule, and showed partial invasion.

Implications:

  • This case challenges the conventional understanding of thymoma encapsulation.
  • It highlights the importance of considering unencapsulated variants in mediastinal tumor diagnosis.
  • Further research into the behavior and characteristics of unencapsulated thymomas is warranted.