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Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
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Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
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Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
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Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Ischemic myopathy revealing systemic calciphylaxis.

Jessie Aouizerate1,2, Laurence Valleyrie-Allanore3, Nicolas Limal4

  • 1Reference Center for Neuromuscular Diseases, Hôpital Henri Mondor, Assistance Publique des Hôpitaux de Paris (APHP); INSERM U955-Team 10, Université Paris Est-Créteil, 94 Avenue du Marechal de Lattre de Tassigny, 94010, Creteil, France.

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PubMed
Summary
This summary is machine-generated.

Calcific uremic arteriolopathy (CUA) can cause severe muscle problems in dialysis patients. Muscle biopsy is crucial for diagnosing this rare but serious condition, enabling earlier treatment.

Keywords:
calciphylaxischronic renal failurecomplementischemic myopathymuscle biopsyvon Kossa staining

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Area of Science:

  • Nephrology
  • Pathology
  • Neurology

Background:

  • Patients with renal failure undergoing dialysis often experience neuromuscular issues.
  • Calcific uremic arteriolopathy (CUA) is a severe, life-threatening condition linked to end-stage renal disease and transplantation.

Observation:

  • A hemodialysis patient presented with rapid systemic vasculopathy, muscle atrophy, and proximal weakness.
  • Muscle biopsy revealed diffuse vascular calcification, ischemic myopathy, and myofiber calcium deposits.

Findings:

  • Quadriceps muscle biopsy confirmed calcific uremic arteriolopathy (CUA).
  • Histopathology showed vascular calcification, ischemic myopathy, intracellular calcium, and complement activation (C5b9).

Implications:

  • This case highlights the diagnostic utility of muscle biopsy in systemic calciphylaxis.
  • Early diagnosis and treatment are vital for improving prognosis in CUA patients with neuromuscular involvement.