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- W2030207071 abstract "Pulmonary sequestration is a congenital malformation within the spectrum of bronchopulmonary foregut anomalies. This pathologic condition was first described by Rokitansky1Rokitansky C Lehrbuch der pathologischen Anatomie.in: ed 3. 1861: 44Google Scholar and Rektorzik2Rektorzik E Ueber accessorische Lungenlapen.Wochenbl Z Ges Aerzte. 1861; 17: 4-6Google Scholar in 1861 with the term “accessory pulmonary lobe.” It was renamed “pulmonary sequestration” by Price3Pryce DM Lower accessory pulmonary artery with intralobar sequestration of lung: a report of seven cases.J Pathol. 1946; 58: 457-467Crossref Scopus (341) Google Scholar in 1946. This type of malformation of the lung receives blood supply from one or more systemic arteries and may or may not communicate with the bronchial tree. Incidence of pulmonary sequestration ranges between 0.15% and 1.7%.4Weinbaum PJ Bors-Koefoed R Green K Antenatal ultrasonographic findings in a case of intra-abdominal pulmonary sequestration.Obstet Gynecol. 1989; 73: 860-861PubMed Google Scholar Two different forms have been described: intralobar and extralobar. Intralobar sequestration is localized within the normal pulmonary parenchyma whereas extralobar forms are totally separate from the lung and usually have their own pleural covering. Infradiaphragmatic pulmonary sequestration belongs to the extralobar type, and most cases have been reported in the suprarenal area associated with other congenital malformations.5Samuel M Burge DM Extra-lobar intra-abdominal pulmonary sequestration.Eur J Pediatr Surg. 1996; 6: 107-109Crossref PubMed Scopus (10) Google Scholar Since 1990, 13 patients with pulmonary sequestration have been operated on in our hospital. In 10 patients, sequestration was intralobar. The pathologic tissue was localized in the right lower lobe in 7 patients and in the left lower lobe in 3 patients. Sequestration was extralobar in another 3 patients, and 1 of them, the case reported here, was infradiaphragmatic. A left suprarenal mass, consistent with the radiologic diagnosis of neuroblastoma, was found in a 21-week-old fetus by routine antenatal ultrasonography. The baby was born without complications at 38 weeks weighing 3250 g, and no masses were detected on palpation of the abdomen. The mother's medical history was remarkable only for gestational diabetes. A postnatal ultrasound (Figure 1) revealed a homogeneous suprarenal mass measuring 2 × 2 cm compatible with the prenatal diagnosis.An abdominal computed tomographic scan showed a solid tumor at the same location with small hypodense areas inside (Figure 2).Fig. 2Abdominal computed tomographic scan demonstrating a solid tumor containing small hypodense areas (arrow)View Large Image Figure ViewerDownload Hi-res image Download (PPT)Bone marrow punction showed no abnormalities and tumor markers for neuroblastoma were negative. Surgical treatment was indicated, and a 3-cm solid tumor adherent to the lower esophagus and greater gastric curvature was found at laparotomy 48 hours after birth. The mass had a narrow communication with the stomach and was completely excised with no complications. Postoperative recovery was uneventful. Histopathologic examination was consistent with the diagnosis of extralobar pulmonary sequestration. The mass was composed of immature lung tissue with a principal bronchus and bronchioles and cystic dilatations. Alveolar structures were scarce. The present case is a very unusual type of pulmonary sequestration, a congenital malformation within the spectrum of bronchopulmonary foregut anomalies along with bronchogenic cyst and cystic adenomatoid malformation. These malformations occur simultaneously and in association with other anomalies such as gastric and esophageal diverticula. The combination of these malformations supports a common origin from the foregut. In 1968, Gerle, Jaretzki, and Ashley6Gerle RD Jaretzki 3rd, A Ashley CA Congenital bronchopulmonary foregut malformation.N Engl J Med. 1968; 278: 1413-1419Crossref PubMed Scopus (256) Google Scholar introduced the term “bronchopulmonary foregut malformation” in reference to pulmonary sequestrations with a communication with the esophagus or stomach. This communication with the gastrointestinal tract may be an obliterated fibrous cord or a patent tract,7Tovar J Benavent MI Diaphragmatic hernia associated with double pulmonary sequestration.J Pediatr Surg. 1979; 14: 604-606Abstract Full Text PDF PubMed Scopus (4) Google Scholar as in our case. It has recently been proposed that the name “bronchopulmonary foregut malformation” be applied to all anomalies of the tracheobronchial tree originating during the development from the foregut.8Srikanth MS Ford EG Stanley P Mahour GH Communicating bronchopulmonary foregut malformations: classification and embryogenesis.J Pediatr Surg. 1992; 27: 732-736Abstract Full Text PDF PubMed Scopus (96) Google Scholar Extralobar intra-abdominal pulmonary sequestration is extremely uncommon. In most cases the sequestration has been close to the diaphragm, in the left suprarenal area, and it has been associated with other congenital malformations in approximately 50% of cases. Diaphragmatic hernia, pericardial defects, pectus excavatum, and congenital heart disease are the most frequently reported associated anomalies.9Black MD Bass J Martin DJ Carpenter BF Intraabdominal pulmonary sequestration.J Pediatr Surg. 1983; 26: 1381-1383Abstract Full Text PDF Scopus (23) Google Scholar, 10Eizaguirre I Tovar J Conde J Pulmonary sequestration with esophagobronchial fistula: presentation of 2 cases and a review of the literature.An Esp Pediatr. 1989; 31: 297-301PubMed Google Scholar It is remarkable that in our case intra-abdominal sequestration with gastric communication was an isolated malformation. Prenatal diagnosis is difficult, most cases being diagnosed during the histopathologic study of a resected mass found during routine ultrasonography. Several ultrasonographic characteristics have been described to help in the differential diagnosis, such as the presence of calcifications in a homogeneous and echogenic mass. Differential diagnosis includes suprarenal neuroblastoma, teratoma, foregut duplication, and cystic adenomatoid malformation. The latter is also a congenital lung anomaly characterized by a mass of cysts that may contain different types of tissue such as cartilage, muscle, and mucous glands. Carcinomas and rhabdomyosarcomas have been reported to originate in cystic adenomatoid malformations.11Morad NA al-Malki T e-Tahir M Intra-abdominal pulmonary sequestration: diagnostic difficulties.Pathology. 1997; 29: 218-220Abstract Full Text PDF PubMed Scopus (19) Google Scholar Treatment of intra-abdominal pulmonary sequestration is controversial. Spontaneous regression has been reported in patients with intralobar or extralobar intrathoracic sequestration.12Garcia-Pena P Lucaya J Hendry GM McAndrew PT Duran C Spontaneous involution of pulmonary sequestration in children: a report of two cases and review of the literature.Pediatr Radiol. 1998; 28: 266-270Crossref PubMed Scopus (42) Google Scholar On this basis, some authors have proposed a close follow-up with imaging studies. However, surgical excision should be performed whenever the diagnosis of neuroblastoma or cystic adenomatoid malformation cannot be excluded.9Black MD Bass J Martin DJ Carpenter BF Intraabdominal pulmonary sequestration.J Pediatr Surg. 1983; 26: 1381-1383Abstract Full Text PDF Scopus (23) Google Scholar" @default.
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- W2030207071 title "Extralobar infradiaphragmatic pulmonary sequestration with a digestive communication" @default.
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