In older patients , fibromatosis usually lacks calcification or chondroid differentiation 对于老年患者，纤维瘤病通常缺少钙化或者软骨样分化。
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Chondroma of soft parts also affects the hands , but it is usually well circumscribed and has more well developed chondroid differentiation 软组织的软骨瘤也会影响手部，但是通常此瘤界限清楚，有很多发育良好的软骨样分化。
In infants , fibromatosis usually involves the head , neck and proximal extremities , the background is more myxoid than chondroid , and calcification is rare 在婴儿，纤维瘤病经常累及头部、颈部和邻近的四肢，背景以粘液为主，少量的软骨样间质，钙化罕见。
