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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: J Pediatr. 2014 Oct 11;166(1):178–183. doi: 10.1016/j.jpeds.2014.09.010

Figure 2.

Figure 2

Intrapulmonary anastomotic vessels (IPAV) (or shunt vessels; designated as “S”) are readily identified as thin walled vessels that bridge pulmonary veins and microvessels surrounding pulmonary arteries and airways in infants with severe CDH Prominent and dilated IPAV are often located within the broncho-arterial bundle in the distal lung (top panels). Immunostaining of vessels for CD31 and D2-40 demonstrate strong staining for CD31 (endothelial marker) (bottom left) but not stain for D2-40 (lymphatic marker) in IPAV (bottom right panel). Abbreviations: S, shunt vessel; A, airspace; PV, pulmonary vein; L lymphatic; PA, pulmonary artery; B, bronchus.