We present a patient with a large tumor embolus attached to a pacemaker electrode leading to multiple pulmonary emboli. At postmortem examination, this thrombus was composed of clusters of well-differentiated squamous cell carcinoma intermingled with fibrin. Tumor involvement was not evident in the myocardium, endocardium, or epicardium. The primary tumor was discovered in the lower intrathoracic esophagus. Tumor microemboli from the esophageal primary lesions may have accumulated around the pacemaker electrode due to turbulent flow in this region, producing a large and friable tumor embolus.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/j.1540-8159.1998.tb01137.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Interrupted versus uninterrupted anticoagulation for cardiac rhythm management device insertion.
Cochrane Database Syst Rev
January 2025
Department of Pharmacy Practice, University of Connecticut, Storrs, CT 06269, USA.
Background: Guideline-recommended strategies to interrupt chronic anticoagulation with warfarin or direct oral anticoagulants (DOAC) during the perioperative period of cardiac implantable electronic device (CIED) surgery differ worldwide. There is uncertainty concerning the benefits and harms of interrupted and uninterrupted anticoagulation in patients undergoing CIED surgery.
Objectives: To assess the benefits and harms of interrupted anticoagulation (IAC) with either warfarin or DOAC in the perioperative period of CIED surgery versus uninterrupted anticoagulation (UAC), with or without heparin bridging, during an equivalent time frame, for CIED surgery.
Feasibility of anchoring active fixation quadripolar lead to the main body of the dilated coronary sinus in a patient with persistent left superior vena cava: a case report.
Eur Heart J Case Rep
January 2025
Department of Cardiology, Yokohama City University Hospital, 3-9 Fukuura, Kanazawa-Ku, Yokohama city, Kanagawa 236-0004, Japan.
Background: Coronary sinus (CS) lead placement in persistent left superior vena cava (PLSVC) cases is challenging because of the poor backup force of the guiding catheter within the enlarged CS. Active fixation Quadripolar leads (Attain Stability™ Quad 4798, Medtronic) can expand choice to CS branches with limited access; however, no cases of anchoring to the main body of the CS have been published to date.
Case Summary: We describe a case of cardiac resynchronization therapy pacemaker upgrade in a 79-year-old female who developed pacing-induced cardiomyopathy after pacemaker implantation via the right superior vena cava (SVC) for atrioventricular block eight years ago wherein PLSVC was revealed during the procedure.
Conduction system metastasis in a patient with carcinoma oesophagus.
BMJ Case Rep
January 2025
Cardiology, AIIMS, New Delhi, India
A young man in his 30s presented to us with multiple episodes of syncope and exertional dyspnoea for the last 2 weeks. He was diagnosed with squamous cell carcinoma of the lower one-third of the oesophagus in 2021 for which he was treated with neoadjuvant chemoradiotherapy, followed by McKeown oesophagectomy. At 2-year follow-up, he had developed a soft tissue swelling in the scalp, which was diagnosed as a tumour recurrence and radiotherapy was initiated.
View Article and Find Full Text PDFConcurrent Micra Leadless Pacemaker Implantation and AVN Ablation: Computer Modeling of Novel Risk Mitigation Strategy.
Pacing Clin Electrophysiol
January 2025
Aurora Cardiovascular and Thoracic Services, Aurora Sinai/Aurora St. Luke's Medical Centers, Milwaukee, Wisconsin, USA.
Background: Concurrent Micra leadless pacemaker (Medtronic, Minneapolis, Minnesota) implantation and atrioventricular node (AVN) ablation has been shown to be feasible and safe in patients with symptomatic, drug-refractory atrial fibrillation (AF). However, major complications within the 30 days after concurrent Micra implantation and AVN ablation have been reported. We evaluated the efficacy and safety of the concurrent procedure at our institution.
View Article and Find Full Text PDFMicra Leadless and Transvenous Pacemaker: A Single-Center Comparative Study of QRS Wave Duration Resulting From Different Pacing Sites.
Ann Noninvasive Electrocardiol
January 2025
Department of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
Objective: To compare the paced QRS duration on different sites in age-, gender-, and indication-matched patients implanted with Micra leadless pacemakers and conventional transvenous pacemakers (TV-PM).
Method: A total of 82 patients from Xinhua Hospital, Shanghai Jiaotong University, were enrolled, including two groups of 41 patients matched according to gender, age, and pacemaker indications, who underwent Micra and TV-PM implantations, respectively. The baseline data of the patients, the pacing site described using three- and nine-partition methods, and the paced QRS duration on 12-lead electrocardiogram were then analyzed.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!