Microscopic mimicry of lymphomas: diagnostic pitfalls

Area of Science:

• Pathology
• Hematopathology
• Diagnostic challenges

Background:

• Accurate differentiation between lymphoma and lymphoma simulators is a critical diagnostic challenge.
• Misdiagnosis can lead to inappropriate treatment and patient harm.

Purpose of the Study:

• To provide a framework for distinguishing lymphoma from lymphoma simulators.
• To outline the utility of ancillary studies and clinical information in this diagnostic process.

Main Methods:

• Review of common lymphoma simulators.
• Categorization of simulators based on histopathological features.
• Emphasis on the role of ancillary studies and clinical data.

Main Results:

• Lymphoma simulators can be broadly categorized into non-lymphoid neoplasms, chronic lymphoid hyperplasias, and acute lymphoid hyperplasias.
• Ancillary studies, ordered by reliability, are essential for accurate distinction.
• Clinical case information is vital to prevent misinterpretation.

Conclusions:

• A systematic approach utilizing ancillary studies and clinical context is necessary for reliable differentiation of lymphoma from its simulators.
• Understanding the categories of simulators aids pathologists in accurate diagnosis.