PMC6607299_01
computed Tomography (CT) of the abdomen and pelvis showing osteosclerosis of pelvic bones
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CT abdomen did not reveal any abnormalities of the liver, however it did show diffuse sclerosis of the pelvis (Figure 1).
A) paratrabecular mast cell inifltrates occupying the bone marrow; B) neoplastic spindle cell infiltrate in the bone marrow; C) positive staining to tryptase confirming mast cell lineage; D) positive staining to CD 25 consistent with neoplastic mast cells
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Immunohistochemical staining was positive for tryptase and CD25 (Figure 2).