"T1: isointense to slightly hyperintense signal compared to muscle 5-6,8"
"IP/OOP imaging: typically no signal drop out, i.e. no chemical shift"
"T1 C+ (Gd): linear regions of enhancement may be seen coursing through the mass, thought to represent fibrous septa 6"
"T1: isointense to slightly hyperintense signal compared to muscle 5-6,8"
"heterogeneous signal, slightly higher than muscle 1,5-6"
"Thymic epithelial tumours are usually of soft tissue attenuation and are usually located between the sternum and great vessels. A cystic component is common and calcification can be seen in as high as 10-50% of patients which tends to be small and more commonly peripherally located. Although calcifications are most commonly seen in more malignant types of thymic neoplasm, individually they are not considered a discriminatory finding. Of interest, CT findings can predict histology as described by the WHO classification scheme for thymic epithelial tumours and thus by extension prognosis 5,6."
"IP/OOP imaging: typically no signal drop out, i.e. no chemical shift"
"Thymic carcinoma has higher FDG-18 PET-CT uptake than other, better differentiated thymic epithelial tumours, as well as normal or hyperplastic thymus tissue. Using an SUV cutoff point of 5.0, high sensitivity (85%) and specificity (92%) can be achieved when trying to distinguish between thymic carcinoma and thymoma 5."
"type A, AB and B1 tumours have the best survival (up to 85% 5-year survival) 10"
"Recurrence rates after surgical excision vary between 8-29% depending on the series and type of tumour 6."
Expected headings
"Associations"
"Thymic epithelial tumours are, in the vast majority of cases, located in the anterior mediastinum, although cases in the neck and posterior mediastinum have been reported 2,6. As such, they can present with venous obstruction, dysphagia or stridor."
"type A: tumours (medullary histology thymomas) are typically rounded, smooth or somewhat lobulated masses of soft tissue attenuation"
"type A, AB and B1 tumours have the best survival (up to 85% 5-year survival) 10"