Histopathologically, the name
chondroid syringoma is somewhat misleading; not all cases have true cartilage or even a chondromyxoid appearance.
Chronic empyema can result in
chondroid formation or in the more severe cases, complete filling of the pouch with purulent material.
In the Masson's trichrome stain for collagen fibers, the
chondroid matrix and cellular components were detected in the ASC group, although fibrosis and scar formation were shown in the control group (Figures 5(a) and 5(b)).
Within the
chondroid lobules, chondrocytes are in lacunae and have a tendency to cluster with large amounts of intervening
chondroid matrix.
Histopathologic features of the surgical specimen were characterized by predominant
chondroid matrix with marked cellularity, high grade atypia, and high mitotic activity.
ICA can accelerate the formation of cartilage matrix and
chondroid tissue [15, 16].
They may harbor
chondroid and bone differentiation as observed in classical mixed tumors.
Similar intraoperative pathology specimens were again obtained at the fracture site distal to the articular surface (Figure 3(b)), and these demonstrated fragments of purple to purple-gray staining matrix with
chondroid metaplasia.
It was determined to show biphasic pattern with densely cellular regions of small anaplastic cells and other areas of
chondroid differentiation, consistent with diagnosis of mesenchymal chondrosarcoma (Figures 2-4).
Next, the
chondroid fusion between left upper region of the sternum and ribs III to V and the dysplastic scapula and clavicula was separated.
Histologic findings were those of a carcinosarcoma with endometrioid adenocarcinoma (20%), hepatoid adenocarcinoma (20%), and sarcomatous components consisting of
chondroid (10%) and spindle cell components (50%) [Figure 4].
Particularly tumors with
chondroid or osseous metaplasia can demonstrate macrocalcifications mammographically.
