Cardiac Amyloidosis Mimicking Non-ST-Segment Myocardial Infarction: A Case Report.

Cardiac amyloidosis is a rare but increasingly recognized condition characterized by the deposition of amyloid fibrils in cardiac tissue, leading to structural and functional heart impairment. This infiltrative cardiomyopathy often mimics more common cardiac conditions, posing significant diagnostic challenges. Particularly deceptive is its presentation as non-ST-segment elevation myocardial infarction (NSTEMI), where the clinical overlap necessitates considering amyloidosis in differential diagnoses.

Lung carcinoma paraneoplastic reactive regional pericarditis mimicking ST elevation myocardial infarct.

ST-elevation myocardial infarction (STEMI) is a cardiac emergency. However, multiple clinical disorders can cause ST-elevation ECG changes, one of which is pericarditis. Regional pericarditis is a less known clinical phenomenon that can mimic STEMI.

Hypercalcemia of malignancy in metastatic esophageal squamous cell carcinoma with simultaneous PTHrP and calcitriol overproduction: A case report with literature review.

Introduction And Importance: hypercalcemia of malignancy is a severe complication of malignancy and associated with poor prognosis. Four mechanisms are implicated in this metabolic disorder, including excess parathyroid-related peptide secretion, focal osteolysis secondary to bone metastasis or multiple myeloma, excess calcitriol production, and ectopic parathyroid hormone production. Humoral hypercalcemia of malignancy secondary to isolated PTHrP or calcitriol overproduction is known; however, hypercalcemia of malignancy due to simultaneous PTHrP and calcitriol overproduction is less well known.

Pellagra, an Almost-Forgotten Differential Diagnosis of Chronic Diarrhea: More Prevalent Than We Think.

Pellagra, caused by vitamin B3 (niacin) deficiency, is traditionally described as dermatitis, diarrhea, dementia (3D), and even death (4D) syndrome if not recognized and treated promptly. Although full-blown pellagra with all 3D features has become rare, pellagra still exists, especially in high-risk populations, which is actually more prevalent than we think. We report that a recently treated patient with the full spectrum of 3D clinical features of pellagra presents as chronic diarrhea of unknown etiology for 1 year.

Treatment for ST-elevation myocardial infarction--bronchoscopy!

ST elevation is usually treated in cardiac catheterization laboratory with an aim for myocardial salvage by restoration of adequate coronary blood flow enhancing both early and long-term survival. Maximum benefit is achieved if therapy is initiated in the first hour after treatment onset, thus ushering the concept of door-to-balloon time. We present an interesting case of a patient whose ST elevation resolved after bronchoscopy for a lung whiteout.

Stress cardiomyopathy: diagnosis, pathophysiology, management, and prognosis.

Stress cardiomyopathy is now a well-recognized reversible cardiomyopathy, with a clinical presentation mimicking Acute Coronary syndrome in the absence of significant coronary artery disease. It is often encountered in postmenopausal females and is usually precipitated by acute emotional or physical stressors. In this review, we have attempted to summarize relevant data regarding diagnosis, typical and atypical presentations, pathophysiology, management options, and prognosis.

Intracardiac thrombosis and acute myocardial infarction as initial presentation of antiphospholipid syndrome.

Antiphospholipid syndrome is a disorder characterized by arterial or venous thrombosis, high plasma levels of antiphospholipid antibodies, recurrent fetal loss (in women) and thrombocytopenia. The authors present a case of a 28-year-old man with no significant medical history who presented with ST elevation myocardial infarction (MI) and underwent percutaneous intervention to left anterior descending artery. He was also found to have intracardiac thrombosis, thrombocytopenia, elevated activated partial thromboplastin time and persistently elevated anticardiolipin and beta-2 glycoprotein antibodies.

AV nodal ablation-induced Gerbode defect (LV-RA Shunt).

A Gerbode defect that comprises a left ventricular to right atrial shunt is usually a congenital cardiac condition. Rarely, acquired Gerbode defects secondary to aortic or tricuspid valve endocarditis have been reported. We present a case of a Gerbode defect caused by catheter ablation of the AV node in a patient with a severely dilated cardiomyopathy and refractory atrial fibrillation.

Cardiac arrest with "pseudo-Brugada" ECG pattern in the setting of a coronary artery anomaly.

A 36-year-old Hispanic man with no prior cardiac history presented with chest pain and then ventricular fibrillation requiring defibrillation after a physical altercation. His ECG on presentation to the emergency room was suggestive of Brugada syndrome, which later normalized. Cardiac catheterization revealed anomalous origin of right coronary artery from the left coronary cusp (coursing between the pulmonary artery and the aorta) for which he underwent surgical reimplantation, and subsequent pharmacological challenge test did not provoke reappearance of a Brugada ECG pattern.

New trends in the drug therapy of localized and disseminated Mycobacterium avium complex infection.

Recent advances in the drug therapy of localized and disseminated infection with Mycobacterium avium complex (MAC) are reviewed. MAC infection is the most commonly reported bacterial infection in patients with AIDS, and the frequency of this infection in patients negative for the human immunodeficiency virus (HIV) is increasing. The main portals of entry for MAC are the gastrointestinal and respiratory tracts.