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Target Concepts:
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Query: UMLS:C0376358 (
prostate cancer
)
59,338
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Cardiac amyloidosis is an important cause of
restrictive cardiomyopathy
and congestive heart failure. Bone scintigraphy with [Tc]hydroxymethylene diphosphonate (Tc-HDP) and [F]sodium fluoride (F-NaF) have been investigated in the noninvasive diagnosis of transthyretin (ATTR)-related cardiac amyloidosis. We present a case of a 76-year-old man with metastatic
prostate cancer
who underwent Tc-HDP bone scintigraphy with an incidental finding of diffuse left ventricular abnormal uptake suggesting ATTR cardiac amyloidosis. Review of previous imaging showed a negative F-NaF PET/CT study. This example suggests that the mechanism of uptake of Tc-HDP and F-NaF may differ in patients with ATTR cardiac amyloidosis.
...
PMID:Discordant Findings on 18F-NaF and 99mTc-HDP Bone Scans in a Patient With ATTR Cardiac Amyloidosis. 2926 19
Cardiac amyloidosis (CA) is an important cause of
restrictive cardiomyopathy
and heart failure with preserved ejection fraction (HFpEF). At present, 3 bone-seeking tracers,
99m
Tc-diphosphono-1,2-propanodicarboxylic acid (
99m
Tc-DPD),
99m
Tc-pyrophosphate (
99m
Tc-PYP), and
99m
Tc-hydroxymethylene diphosphonate (
99m
Tc-HMDP), have been evaluated for detecting CA, but they are not widely available. In contrast, methylene diphosphate (MDP) is widely available. However, only sporadic case reports have shown that MDP can accumulate in patients with CA. We report an 86-year-old man with multiple medical problems, including hypertension, hyperlipidemia, HFpEF, and a history of treated
prostate cancer
, who was referred for a
99m
Tc-MDP bone scan to rule out bone metastasis. The bone scan was negative for bone metastasis, but there was mild tracer accumulation in the heart, suggestive of CA. Subsequently, CA was diagnosed on
99m
Tc-PYP imaging. MDP may play a role comparable to other bone-seeking tracers in the diagnosis of CA and may be used as a noninvasive adjunct in the diagnosis of CA. Future research should compare MDP with other bone-seeking tracers for the diagnosis of CA. In addition, mechanistic studies on tracer binding to amyloid fibrils may help understand the pathophysiology of CA and facilitate the development of better and more specific tracers for CA.
...
PMID:Incidentally detected cardiac amyloidosis on
99m
Tc-MDP bone scintigraphy. 3228 Apr 3
