PMC10184206_01
(a) Left lateral, (b) right lateral and (c) dorsoventral thoracic radiographs demonstrating a large expansile mass centered on the caudle angle of the right scapula that is characterized by proliferation/sclerosis and permeative to moth-eaten lysis
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Thoracic radiographs were repeated, and no pulmonary parenchymal lesions were described (Figure 1); ultrasound was used to differentiate the previously reported pulmonary nodule as a focus of nodular fat necrosis.
Dorsal thoracic CT showing a large expansive irregularly mineralized mass involving the right scapula
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CT of the thorax, forelimbs and abdomen revealed a large, expansile, irregularly mineralized mass centered over the caudoventral scapula at the site of attachment of the infraspinatus muscle (Figure 2).
(a,b) Histology of the scapular mass. Hematoxylin and eosin stain
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Medullary bony trabeculae were compressed and thinned by lobules of well-differentiated adipocytes with large, clear vacuoles replacing the cytoplasm with peripheralization and compression of the nuclei (Figure 3).