Laryngeal Chondrosarcoma: An Exceptional Localisation of a Not Unfrequent Bone Tumor
Table 2
Chondrosarcoma classification by Evans et al. [12].
Grade 1
Well-differentiated (low-grade)
Small, densely staining nuclei often with multiple nuclei within one lacune
Grade 2
Moderately differentiated (intermediate grade)
Increased cellularity, significant amount of cells having moderately sized nuclei but demonstrate a low mitotic rate of less than 2 mitoses per HPF (also includes myxoid chondrosarcoma)
Grade 3
Poorly differentiated (high-grade)
More than 2 mitoses/HPF, nuclear size generally greater than seen in grade 2 (also includes dedifferentiated chondrosarcoma)
