Malignant thoracopulmonary small-cell ("Askin") tumor

Area of Science:

• Oncology
• Pathology
• Radiology

Background:

• The Askin tumor, a rare malignant small-cell tumor, originates from the thoracopulmonary region.
• It is recognized as a distinct clinicopathologic entity of neuroectodermal origin.
• Clinical presentation typically involves a chest wall mass, potentially accompanied by pain.

Purpose of the Study:

• To review the clinical, radiographic, and pathologic features of Askin tumors.
• To highlight the characteristic presentation and metastatic patterns of this rare malignancy.
• To inform radiologists about this entity for accurate diagnosis and management.

Main Methods:

• Retrospective review of clinical, radiographic, and pathologic data.
• Analysis of 10 patient cases with documented Askin tumors.
• Correlation of imaging findings with histopathologic diagnosis.

Main Results:

• Askin tumors present as chest wall soft-tissue masses on imaging.
• Radiographic findings may include pleural or rib involvement.
• Metastatic disease commonly affects the skeletal system, bone marrow, thorax, and sympathetic chain, with rare instances of adrenal and liver metastasis.

Conclusions:

• The Askin tumor is a distinct neuroectodermal tumor of the thoracopulmonary region.
• Awareness of its typical presentation and metastatic patterns is crucial for radiologists.
• Prompt recognition and aggressive management of metastases are essential for patient outcomes.