Cold agglutinin syndrome (CAS) is a rare subset of autoimmune hemolytic anemia (AIHA) and can be classified as either primary or secondary. Secondary cold agglutinin disease has been associated with both viral and bacterial pathogens with the most common bacterial pathogen being Mycoplasma pneumoniae. Legionella pneumonia is a well-known causative agent for community-acquired pneumonia that can lead to a severe disease requiring hospitalization that is rarely associated with AIHA. We highlight the importance of recognizing Legionella pneumonia as a causative pathogen for CAS.

Primary malignant cardiac tumors are extremely rare (<0.03% prevalence). Cardiac leiomyosarcoma is especially uncommon and rarely presents with functional severe mitral stenosis. A 49-year-old man presented with worsening exertional chest pain and dyspnea. Imaging was discrepant between a malignant or benign mass. Magnetic resonance imaging (MRI) favored a benign mass, whereas echocardiography favored malignancy. Final pathology was consistent with high-grade left atrial leiomyosarcoma with myxoid features. Leiomyosarcomas are very rare primary malignancy cardiac tumors, and current literature consists mostly of case reports. Despite cardiac MRI being the gold standard for imaging cardiac masses, information gathered from echocardiography is crucial for both diagnosis and surgical planning. General patterns of leiomyosarcoma include a large sessile left atrial mass, mixed hyperintense T1 and T2 signaling on MRI, and occurrence from the fourth to sixth decades of life. Careful consideration of all imaging findings is important, especially in instances where 1 modality suggests a benign mass and another suggests malignancy.

Stokes–Adams syncope has various etiologies including atrioventricular conduction delays, ischemia, or vagal mechanisms. Careful EKG analysis including serial EKGs, may help identify contributory mechanisms to the etiology of syncope, even after permanent pacemaker implantation.

Patients undergoing procedures are often transitioned off anticoagulants using anti-platelet agents with short half-lives as a "bridge." We present the case of a patient with a history of in-stent thromboses who experienced a thrombotic event following a literature-guided bridging protocol. This case is one of the first to show that stopping cangrelor within six hours led to a need for urgent revascularization and suggests that the timing for discontinuing bridging agents should be customized based on the patient's history of increased blood clotting.

Acute limb ischemia (ALI) is a medical and surgical emergency, and the mainstays of treatment are therapeutic anticoagulation and surgery. These interventions require adequate platelet count and functionality. Anticoagulation and surgery can be complicated in thrombocytopenic patients and require interdisciplinary management for optimal outcomes, as literature is limited in this population. We present a case of a patient with severe thrombocytopenia who developed limb ischemia from cancer-associated thrombosis (CAT). We propose a management strategy for anticoagulation and perioperative platelet transfusion, with successful revascularization without adverse bleeding events. While successful, more data is required to investigate long-term outcomes.

Spontaneous coronary artery dissection (SCAD) and Takotsubo syndrome (TTS) are two conditions presenting as acute coronary syndromes that predominantly affect women and are frequently triggered by emotional or physical stress. While traditionally considered distinct entities, emerging evidence suggests that these conditions may coexist more frequently than previously recognized, sharing common pathophysiological mechanisms centered on catecholamine-mediated pathways, vascular vulnerability, and hormonal influences. Their overlapping presentations create significant diagnostic challenges that may lead to misdiagnosis and suboptimal management. This narrative review examines the pathophysiological convergence between SCAD and TTS, addresses the diagnostic complexity arising when these entities coexist, and proposes a novel stepwise diagnostic algorithm integrating clinical risk stratification, coronary angiography, intracoronary imaging, and cardiac magnetic resonance imaging. The review also provides scenario-dependent management guidance and outlines priorities for future research.