Hyaline cartilage                                  Chart

              
Cell types: Adipocyte (fat cell)
 

Differential diagnosis:
Bone can be distinguished from cartilage by the amorphous ground glass appearance of the latter and the absence of Haversian concentric system. Hyaline cartilage can be distinguished from other types of cartilage by the absence of fibers in the ground matrix except in the perichondrium.

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Diagnostic Features:
a. Tissue is compact (e.g. liver) possessing no main lumen
b. Tissue is homogenous in appearance appearing like ground glass or transparent with the punctuation of lacunae which house the chondrocytes.
c. Tissue is relatively devoid of visible fibers (i.e. collagenous or elastic fibers).
d. Collagenous fibers are present only in perichondrium but absent in amorphous matrix.
e. Tissue stains deeply with basic dyes due to chondroitin sulphate and stains metachromatically with toluidine blue.
f. Examples included the trachea, costal cartilage, articular cartilage and temporary cartilage (for endochondral ossification).

 

Database selection: Practical Tissue Gross

Level 1: Select  compact
Level 2: Select sclerous tissue from list of sclerous, muscular, connective, organ-glands and nervous tissues.
Level 3: Select homogenous since the amorphous ground substance appear uniform and transparent.
Level 4: Select cartilage in view of homogeneity and chondrocytic lacunae and absence of Haversian system and also no mesenchyme as in spongy bone.

This could be a section of either articular, costal, temporary or tracheal cartilage.

 

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