TTR and axial length measurement: Patients with cardiac amyloidosis transthyretin (ATTR), including wild-type ATTR (ATTR-wt) and mutant-type ATTR (ATTR-m), present with normal FLCs and a positive Tc-99m PYP scintigraphy with an intensive Tc-99m PYP uptake in the heart.[3,4] However, patients with AL rarely present with false positive technetium-99m 3,3-diphosphono-1,2-propano-dicarboxylic acid (Tc-99m DPD) or technetium-99m hydroxymethylenediphosphonate (Tc-99m HMDP) scintigraphy.[5–7] We present a case of AL who presented a false positive Tc-99m PYP scintigraphy.