Thymic Carcinoma Associated with Cerebellar Degeneration

Area of Science:

• Neurology
• Oncology
• Pathology

Background:

• Paraneoplastic cerebellar degeneration (PCD) is an infrequent neurological disorder.
• Association between PCD and thymic carcinoma is exceptionally rare.
• Neurological symptoms can be the initial presentation of an underlying malignancy.

Purpose of the Study:

• To report a rare case of paraneoplastic cerebellar degeneration.
• To highlight the association between thymic carcinoma and PCD.
• To emphasize the importance of considering paraneoplastic syndromes in unexplained neurological deficits.

Main Methods:

• Case presentation of a 57-year-old man with ataxia.
• Clinical and radiological evaluation for cerebellar degeneration.
• Computed tomography (CT) to identify mediastinal mass, leading to thymic carcinoma diagnosis.

Main Results:

• The patient presented with ataxia and cerebellar degeneration.
• CT revealed a mediastinal mass, diagnosed as thymic carcinoma.
• This case represents a rare association between thymic carcinoma and PCD.

Conclusions:

• Unexplained subacute neurological symptoms in adults warrant consideration of paraneoplastic syndromes.
• In patients over 50, acute or subacute cerebellar degeneration is paraneoplastic in 50% of cases.
• While small-cell lung cancer is the most common cause, thymic neoplasms should be considered in the differential diagnosis of PCD.