Acute Myocardial Infarction in a Patient with Two-Vessel Occlusion and a Large Lambl’s Excrescence

Table 1

Differences between LE, giant LE, and PFE.

	LE	Giant LE	PFE
Appearance	Thin, single, elongated structures	Complex forms resulting from adherence of multiple adjacent excrescences	Multiple papillary fronds attached to the endocardium by a short pedicle (sea-anemone-like)
Multiple	>90%	Always	Rarely
Dimension	The vast majority between 4 and 17 mm; Very few described > 20 mm		Around 10 mm; up to 70 mm
Location	At sites of valve closure		More commonly from; the midportion of the valve, away from the lines of closure; 23% on the endocardial nonvalvular surface
Histology	Core of elastic connective tissue surrounded by layers of fibrin and acid mucopolysaccharide matrix
	Single layer of endocardial cells		Single or multiple layers of endocardial cells
Embolic risk	Low		High