[Giant cell-containing tumors of bone and differential diagnoses]

Area of Science:

• Pathology
• Oncology
• Orthopedics

Background:

• Osteoclastic giant cells are common in bone lesions.
• The WHO classification groups aneurysmal bone cyst, giant cell tumor of bone, and non-ossifying fibroma based on morphology.
• These distinct entities can exhibit similar appearances, necessitating careful differentiation.

Purpose of the Study:

• To review bone tumors containing osteoclastic giant cells.
• To discuss differential diagnostic considerations, especially in small biopsies.
• To explore overlaps with soft tissue tumors containing giant cells.

Main Methods:

• Literature review focusing on bone tumors with osteoclastic giant cells.
• Analysis of morphological and molecular features.
• Comparison with selected soft tissue tumors.

Main Results:

• Several bone tumors frequently contain osteoclastic giant cells.
• Morphological similarities can complicate diagnosis, particularly in limited tissue samples.
• Differential diagnosis includes chondrogenic, osteogenic, and soft tissue tumors.

Conclusions:

• Accurate diagnosis of giant cell-rich bone lesions requires consideration of diverse entities.
• Distinguishing between similar-appearing tumors is crucial for appropriate management.
• Understanding overlapping features aids in daily diagnostic practice.