PMC9947569_01
Pyrophosphate (PYP) scan strongly suggestive of transthyretin cardiac amyloidosis (ATTR-CM)
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FIG1
A pyrophosphate (PYP) scan was obtained and strongly suggested transthyretin cardiac amyloidosis (ATTR-CM) (Figure 1).
Hematoxylin and eosin stain of the left vastus lateralis muscle: Moderate variability in muscle fiber size with active myofiber necrosis and myophagocytosis with minimal inflammatory infiltration
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FIG2
Left vastus lateralis muscle biopsy revealed moderate variability in muscle fiber size with active myofiber necrosis and myophagocytosis with minimal inflammatory infiltration on hematoxylin and eosin stain, significant for necrotizing myopathy (Figures 2, 3).
Hematoxylin and eosin stain of the left vastus lateralis muscle: Moderate variability in muscle fiber size with active myofiber necrosis and myophagocytosis with minimal inflammatory infiltration
cureus-0015-00000034121-i03.jpg
PMC9947569_01_cureus-0015-00000034121-i03.jpg
FIG3
Left vastus lateralis muscle biopsy revealed moderate variability in muscle fiber size with active myofiber necrosis and myophagocytosis with minimal inflammatory infiltration on hematoxylin and eosin stain, significant for necrotizing myopathy (Figures 2, 3).