case_images: PMC11730515_01
case_images: Electrocardiogram (ECG) on admission.
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case_images: An electrocardiogram on admission showed an atrial pacing rate with narrow QRS, low T-wave amplitude in lead V3-V6, lead II, lead III, and lead avF (Figure 1).
case_images: Location of the pacemaker shown by X-ray.
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case_images: The location of the pacemaker was identified by X-ray when the patient lay on the bed in the heart catheter room (Figure 2).
case_images: Fat liquefaction and fat particles in pacemaker pocket. (A) Fat liquefaction in the pacemaker pocket shown by the black arrow; (B) Fat particles adhered to the wall of the pacemaker pocket shown by the other blue arrows.
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case_images: Thick yellow liquid was seen to flow out of the pacemaker pocket when opened during the pacemaker replacement procedure (Figure 3A). Many fat particles were observed adhered to the wall of the pacemaker pocket (Figure 3B).
case_images: Pathology of the pacemaker pocket wall. Two tissue samples 5 mm in size were obtained from different areas of the pacemaker pocket incision. Both samples showed fat and fibrillar connective tissue with a few inflammatory cells, local tissue degeneration and necrosis on immunohistochemical staining (A and B).
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case_images: Fat and fibrillar connective tissue with a few inflammatory cells, local tissue degeneration and necrosis were shown on immunohistochemical staining (Figure 4A and B).
case_images: New X-ray image after replacement procedure.
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case_images: Location of the pacemaker was also identified by X-ray after the procedure (Figure 5).