Radiological features and metastatic patterns of thymic neuroendocrine tumours

Area of Science:

• Oncology
• Radiology
• Pathology

Background:

• Thymic neuroendocrine tumors (NETs) are rare malignancies.
• Understanding their imaging features and metastatic patterns is crucial for patient management.

Purpose of the Study:

• To investigate the clinical and imaging characteristics of thymic NETs.
• To define the radiological patterns of recurrence and metastasis.

Main Methods:

• Retrospective analysis of 14 patients with histopathologically diagnosed thymic NETs.
• Assessment of preoperative imaging for primary tumor features.
• Evaluation of follow-up imaging for metastasis and recurrence patterns.

Main Results:

• Primary thymic NETs typically appeared as large, lobulated, heterogeneous masses with infiltrative growth.
• Metastasis or recurrence occurred in 79% of patients.
• Common sites included thoracic lymph nodes, pleura, lungs, pericardium, bone, and abdominal lymph nodes.

Conclusions:

• Thymic NETs present with distinct imaging features, often large and infiltrative.
• Metastasis and recurrence are frequent, with characteristic patterns involving thoracic and extra-thoracic sites.