Zusammenfassung
Die Diagnose von großen Halstumoren in der pränatalen Diagnostik ist selten. Für den
Pädiater ist sie aber unerlässlich, da lebensbedrohliche Situationen unmittelbar post
partum durch diese Tumoren verursacht werden. Ein fetaler Halstumor wurde mittels
Ultraschall, bei einer 41-jährigen Frau, gravida 4 para 3, mit 29 + 5 Schwangerschaftswochen
diagnostiziert. Aufgrund der Sonomorphologie handelte es sich am ehesten um ein fetales
Teratom, über die genaue Anatomie von Oropharynx und Trachea konnte im Ultraschall
keine Aussage gemacht werden. Eine MRT-Untersuchung zeigte eine Verdrängung der Trachea
nach rechts hinten und im proximalen Drittel nicht darstellbar. Der Oropharynx fand
sich, durch eine nach proximal verdrängte Zunge, komprimiert. Basierend auf diesen
Befunden wurde als Entbindungsmodus die EXIT-Prozedur gewählt. Eine fetale Magnetresonanztomographie
ist in manchen Fällen eine wertvolle zusätzliche Hilfe in der pränatalen Diagnostik,
um fetale anatomische Strukturen darzustellen. Sie kann wichtige patho-anatomische
Informationen liefern, die das Management der Schwangerschaft beeinflussen können.
Abstract
Large cervical masses in the prenatal period are rare and can cause life threatening
situations after birth. All available diagnostic techniques should therefore be used
to determine the best mode of delivery in the case of such malformation. A large cervical
mass was detected by ultrasound in a 41-year-old women, gravida 4, para 3, at 29 +
5 weeks of gestation. US imaging was most consistent with the diagnosis of a large
cervical teratoma, but it was not possible to sufficiently evaluate the cervical anatomy
of the oropharynx and trachea. An MRI scan demonstrated a distorted oropharynx and
a trachea displaced to the right and posteriorly, but not detectable from the middle
of the neck up to the larynx. Based on these facts, an EXIT procedure was planned
and performed at 30 + 5 weeks of gestation. Foetal MRI provided valuable anatomical
information for all specialists deciding on the indication and the pre-therapeutic
planning of the EXIT procedure.
Schlüsselwörter
Fetales MRT - Halstumor - pränatale Diagnostik - Ultraschall - EXIT-Prozedur
Key words
Fetal MRI - foetal neck mass - prenatal diagnosis - ultrasound - EXIT procedure
References
1
Bouchard S, Johnson M P, Flake A W, Howell L J, Myers L B, Aszick N S, Crombleholme T M.
The EXIT procedure: experience and outcome in 31 cases.
L Pediatr Surg.
2002;
37
418-426
2
Grosfeld J L, Ballantine T V, Lowe D, Baehhner R L.
Benign and malign teratomas in children: analysis of 85 patients.
Surgery.
1976;
80
297-305
3
Tapper D, Lack E E.
Teratomas in infancy and childhood. A 54-year experience at the Children's Hospital
Medical Center.
Ann Surg.
1983;
198
398-410
4
Azizikhan R G, Haase G M, Applebaum H, Dillon P W, Coran A G, King P A, King D R.
Diagnosis, management and outcome of cervicofacial teratomas in neonates: a Childrens
Group study.
J Pediatr Surg.
1995;
30
312-316
5
Zerella J T, Finberg F J.
Obstruction of the neonatal airway from teratomas.
Surg Gynecol Obstet.
1990;
170
126-131
6
Noah M, Norton M, Sandberg P, Esakoff T, Farrell J, Albanese C.
Short-term maternal outcomes that are associated with the EXIT procedure, as compared
with cesarean delivery.
Am J Obstet Gynecol.
2002;
186
773-777
7
Stevens G H, Schoot B, Smets M, Kremer B, Manni J, Gavilanes A, Wilmink J, van Heurn L,
Hasaart T.
The ex utero intra-partum treatment (EXIT) procedure in fetal neck masses: a case
report and review of the literature.
Eu J Obstet Gynecol Repro Bio.
2002;
100
246-250
8
Shih G, Boyd G, Vincent R, Long G, Hauth J, Georgeson K.
The EXIT procedure facilitates delivery of an infant with a pretracheal teratoma.
Anesthesiology.
1998;
98
1573-1575
9
Kathary N, Bulas D, Newman K, Schonberg R.
MRI imaging of foetal neck masses with airway compromise: utility in delivery planning.
Pediatr Radiol.
2001;
31
727-731
10
Prontera W, Jaeggi E T, Pfitzenmaier M, Tassaux D, Pfister R E.
Ex utero intrapartum treatment (EXIT) of severe foetal hydrothorax.
Arch Dis Child Fetal Neonatal.
2002;
86
58-60
11
Schwartz D A, Moriarty K P, Tashjian D B, Wool R, Parker R, Markenson G, Rothstein R,
Shah B, Connelly N, Courtney R.
Anaesthetic management of the exit (ex utero intrapartum treatment) procedure.
J Clin Anesth.
2001;
13
387-391
12
Howell L, Burns K, Lenghetti E, Kerr J, Harkins L.
Management of foetal airway obstruction: an innovative strategy.
Am J Matern Child Nurs.
2002;
27
238-243
13
Midiro P, Grismondi G, Meneghini L, Suma V, Pitton m, Salvadori S, Gamba P.
The EX-utero intrapartum technique (EXIT) procedure in Italy.
Minerva Ginecol.
2002;
53
209-214
14
Midiro P, Zadra N, Grismondi G, Suma V, Pitton M, Salvadori S, Gamba P.
EXIT procedure in a twin gestation and review of the literature.
Am J Perinatol.
202;
18
357-362
15
Bui T, Grunewald C, Frenckner B, Kuylenstierna R, Dahlgren G, Edner A, Granstrom L,
Sellden H.
Successful EXIT procedure in a foetus diagnosed prenatally with congenital high-airway
obstruction syndrome due to laryngeal atresia.
Eur J Pediatr Surg.
2000;
10
328-333
16
Larsen M, Larsen J, Hamersley S, McBride T, Bahadori R.
Successful management of foetal cervical teratoma using EXIT procedure.
Matern Foetal Med.
1999;
8
295-297
17
DeCou J, Jones D, Jacobs H, Touloukian R.
Successful ex utero intrapartum treatment (EXIT) procedure for congenital high airway
obstruction syndrome (CHAOS) owing to laryngeal atresia.
J Pediatr Surg.
1998;
33
1563-1565
18
Kubik-Huch R A, Huisman T, Wisser J, Gottenstein-Alame N, Debatin J F, Seifert B,
Ladd M E, Stallmach T, Marnicek B.
Ultrafast MR imaging of the foetus.
AJR Am J Roentgenol.
2000;
174
599-1606
19
Girard N, Raybaud C, Poncet M.
In vivo MR study of brain maturation in normal foetuses.
AJNR Am J Neuroradiol.
1995;
16
407-413
20
Blaicher W, Prayer D, Mittermayer C h, Pollak A, Bernert G, Deutinger J, Bernaschek G.
Magnetic resonance imaging in foetuses with bilateral moderate ventriculomegaly and
suspected anomaly of corpus callosum on ultrasound scan.
Ultraschall Med.
2003;
24(4)
255-60
MD C. Mittermayer
Department of Neonatology and Intensive Care · University Hospital Vienna
Währinger Gürtel 18-20 · 1090 Vienna · Austria ·
Phone: +43 1 40400 5572
Fax: +43 1 40400 3296
Email: christoph.mittermayer@akh.gyn.magwien.gv.at