Jan 21, 2025 · The thymus is believed to play an important role in the pathogenesis of myasthenia gravis, an autoimmune disease mediated by antibodies against the acetylcholine receptor of skeletal muscles.

May 17, 2023 · Thymic hyperplasia refers to the enlargement or overgrowth of the thymus gland—a part of the immune system located in the chest between the lungs and behind the breastbone. It is a noncancerous condition characterized by an increase in the number and size of the cells in the thymus.

Myasthenia gravis (MG) is by far the most common autoimmune disease linked with thymomas. In this disease, the immune system makes antibodies that block the chemical signals for muscles to move. This causes severe muscle weakness. People with MG tire easily. They may notice problems climbing stairs or walking long distances.

Oct 10, 2024 · The thymus (plural: thymi) is a lymphoid organ in the anterior mediastinum responsible for the production and maturation of T-cells until puberty. It is a vital component of the immune system and plays a role in prevention of cancer 12, infection and autoimmunity 11.

May 6, 2019 · Anterior mediastinal masses include a wide spectrum of malignant and benign pathologies with a large percentage represented by thymic lesions. Distinguishing these masses on diagnostic imaging is fundamental to guide the proper management for each patient.

Oct 7, 2020 · Chemical shift MR imaging can differentiate thymic hyperplasia from thymic tumours. Recognition of macroscopic invasion in thymomas helps guide therapy. Thymomas associated with paraneoplastic syndromes can be identified on imaging. Cystic thymomas can mimic thymic cysts and MRI is useful to differentiate these.

Mar 17, 2025 · Although primary tumors of the thymus are rare, they are the most common causes of a neoplasm of the anterosuperior mediastinum 1. thymoma (staging) one-third are benign two-thirds are malignant invasive thymoma (most) thymic carcinoma (rare) thymolipoma / thymoliposarcoma thymic cyst congenital (contains thymic tissue in wall) secondary to ...

Our standard MRI thymus protocol includes a T2-weighted, T2-weighted fat-saturated (FS), T1-weighted in- (IP) and out-of-phase (OP) imaging, T1-weighted water-sensitive and T1-weighted FS pre- and post-contrast medium administration sequences.

Oct 7, 2020 · Specifically, benign and malignant thymic pathologies, as well as non- thymic anterior mediastinal masses, can present with overlapping im-aging appearances. Identifying distinguishing imaging features of these. entities is crucial to guide appropriate management and avoid misin-terpretation.

Your thymus is a small gland in the lymphatic system that makes and trains special white blood cells called T-cells. The T-cells help your immune system fight disease and infection.