Items tagged “thymus”
26 results found
Article
Thymus
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.
Gross anatomy
It is relati...
Article
Thymic epithelial tumors
Thymic epithelial tumors are rare tumors arising from thymus in anterior mediastinum of middle age patients, these tumors encompass thymomas, invasive thymomas and thymic carcinoma. Despite their relative rarity, they are the most common primary neoplasm of the thymus and anterosuperior mediasti...
Case
Normal thymus - right sided
Published
22 Jan 2010
69% complete
X-ray
Case
Prominent thymus - sail sign
Published
03 Feb 2010
79% complete
X-ray
Case
Thymoma - metastatic
Published
09 Feb 2010
92% complete
CT
X-ray
Case
Thymoma
Published
11 Feb 2010
86% complete
X-ray
MRI
Article
Thymolipoma
Thymolipoma is a rare, benign anterior mediastinal mass of thymic origin, containing both thymic and mature adipose tissue.
Epidemiology
Thymolipomas comprise ~5% (range 2-9%) of all thymic neoplasms, but are less common than a mediastinal lipoma of non-thymic origin. There is no recognized s...
Case
Thymolipoma
Published
04 Mar 2010
42% complete
CT
Article
Primary neoplasms of the thymus
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
cong...
Article
WHO classification of thymic tumors
The World Health Organization (WHO) classification of tumors of the thymus is a component of the WHO classification of thoracic tumors, which was published in its 5th edition in 2021 1. It is a pathological classification of thymic epithelial tumors, including thymomas, thymic carcinomas, and ne...
Case
Encapsulated thymoma (gross pathology)
Published
16 Mar 2010
44% complete
Pathology
Case
Non-invasive thymoma (histology)
Published
16 Mar 2010
44% complete
Pathology
Article
Thymic rebound hyperplasia
Thymic rebound hyperplasia is considered a form of true thymic hyperplasia.
Pathology
In periods of bodily stress the thymus may acutely shrink to 40% of its original volume (depending on the severity and duration of the stress). During the recovery phase it can grow back to its original size ...
Article
Retrocaval thymus
Retrocaval thymus is defined as an ectopic location of thymus between the superior vena cava and great arteries. It is a rare finding and mostly asymptomatic.
Radiographic features
Plain radiograph
may mimic mediastinal mass or right upper lobe collapse 2
CT and MRI
soft tissue that is cons...
Case
Thymus mimicking lymphoma
Published
17 Jun 2015
92% complete
CT
Case
Thymic vein on CT
Published
18 Jun 2015
92% complete
CT
Article
Thymic notch sign
The thymic notch sign represents the normal thymus in a newborn on a frontal chest radiograph. Interruption of the cardiac silhouette forms a notch, which may be seen on either side, but more frequently is seen on the left side.
See also
thymic sail sign
thymic wave sign
Article
Thymic sail sign
The thymic sail sign represents a triangular-shaped inferior margin of the normal thymus seen on a neonatal frontal chest radiograph. It is more commonly seen on the right side, but can also be bilateral. It is seen in 3-15% of all cases. This sign should not be confused with the spinnaker sail ...
Case
Normal thymus
Published
20 May 2016
66% complete
X-ray
Case
Cervical ectopic thymus
Published
05 Jan 2019
94% complete
Ultrasound