Isolated CNS Hodgkin's lymphoma: implications for tissue diagnosis

Area of Science:

• Neurology
• Oncology
• Pathology

Background:

• Central nervous system (CNS) involvement by lymphoid neoplasia presents diagnostic challenges due to varied treatment protocols.
• Cerebrospinal fluid (CSF) analysis can detect abnormal lymphoid cells but often lacks specificity.
• Accurate tissue diagnosis is essential for precise management of CNS lymphoid neoplasms.

Observation:

• A rare case of primary CNS intramedullary Hodgkin's lymphoma without leptomeningeal dissemination was identified.
• Diagnosis was confirmed through a resectional biopsy of a conus medullaris lesion.
• The patient was immunocompromised.

Findings:

• Resectional biopsy provided definitive tissue diagnosis, differentiating Hodgkin's lymphoma from other CNS malignancies.
• Immunohistochemistry on paraffin-embedded tissue is vital for classifying lymphoid neoplasms.
• The patient showed clinical and radiographic improvement after radiation therapy post-surgery.

Implications:

• This case underscores the importance of tissue biopsy for accurate diagnosis and tailored treatment of CNS lymphoid neoplasms.
• Distinguishing between Hodgkin's and non-Hodgkin's lymphoma is critical as treatment regimens differ significantly.
• Early and precise diagnosis impacts patient outcomes in CNS lymphoid malignancies.