Bowen A, Mazer J, Zarabi M, Fujioka M
Pediatr Radiol. 1984;14(1):18-22. doi: 10.1007/BF02386725.
Meconium peritonitis occasionally occurs as a localized, encysted collection of meconium ranging from a few centimeters in size to huge cysts occupying most of the abdominal cavity. The cyst wall consists of fibrous granulation tissue and the cyst may contain only meconium or may also encase loops of bowel. Gas within the cyst indicates persistent communication between the perforated bowel and the cyst cavity; if the perforation seals over in utero the cyst remains gasless. Calcification is a variable finding. Sonography in two neonates with cystic meconium peritonitis showed well-defined, echogenic masses, one of which contained calcifications and was detected in utero.
胎粪性腹膜炎偶尔表现为局限性、包裹性的胎粪聚集，大小从几厘米到占据大部分腹腔的巨大囊肿不等。囊肿壁由纤维肉芽组织构成，囊肿内可能仅含胎粪，也可能包裹肠袢。囊肿内有气体表明穿孔肠管与囊肿腔持续相通；如果穿孔在子宫内闭合，囊肿则无气体。钙化情况不一。对两名患有囊性胎粪性腹膜炎的新生儿进行超声检查时发现了边界清晰的强回声团块，其中一个含有钙化，且在子宫内就被检测到。
