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Biomedical subjects

H Rehder

Publications and source records attributed to H Rehder.

At least 91 records · Page 5Linked to original sources

Intestinal atresia caused by second trimester amniocentesis. Case report.

In an amniotic fluid sample obtained by mid-trimester amniocentesis a string of fetal mucosa and submucosa from the small intestine was found. The fetus was aborted 21 days after the amniocentesis. There was no lesion of the abdominal wall, but an ileal atresia, fibrous adhesions, bilateral hydronephrosis and kinked ureters were found at autopsy.

Adult↗

[Prenatal differential diagnosis in elevated alpha-fetoprotein concentration in the amniotic fluid (author's transl)].

Elevated Alpha-Fetoprotein (AFP) values in the amniotic fluid are most frequently associated with neural occlusive disturbances or, in rare cases, with other external malformations of the foetus. In this article, the authors report on two cases where the elevated AFP had not been due to fetal malformations. In the first case, the cause was identified as foetal proteinuria, probably in the sense of an autosomal-recessive hereditary congenital nephrosis, whereas in the second case the phenomenon was possibly due to a "foetal distress" syndrome. Attention is drawn to the importance of elevated AFP levels. The possibilities of further prenatal differential diagnosis are discussed, such as ultrasound, determination of acetyl cholinesterase AChE) activity and assessment of the amniotic fluid cells.

Abnormalities, Multiple↗

[Particularly small foetus papyraceus after full pregnancy period (author's transl)].

This is a report on an extremely small fetus papyraceus coinciding with an uncomplicated pregnancy, delivery and post-partum period of a healthy newborn; the blighted twin fetus was found quite unexpectedly after a careful inspection of the placenta and fetal membranes. Because of the possible complications following retention of blighted fetuses in utero it seems wise to us to put great emphasis on tedious examination of the afterbirth especially in all those uniparous women, in whom a multiple pregnancy had been suspected in earlier stages of gestation.

Abortion, Missed↗

Severe fetal manifestation of hemifacial microsomia.

Hemifacial microsomia is a heterogenous complex lesion including predominantly unilateral face and head malformations mainly in the region of the first and second branchial arch, vertebral anomalies and varying accompanying malformations. A severe manifestation of this condition is demonstrated in a fetus by means of 5 mm thick sections of the whole head. Abortion had been induced because extreme microcephaly simulated fetal anencephaly in prenatal ultrasound examination. Alpha-Fetoprotein values were normal.

Abortion, Induced↗

Partial trisomy 1q syndrome.

Six cases of partial trisomy 1q, including four cases from the literature and our own two observations are summarized with respect to their clinical symptoms. Distinct similarities of the external aspect and of internal malformations allow the delineation of a syndrome of partial trisomy 1q.

Abnormalities, Multiple↗

[Pathological and embryological studies on abortion cases related to the Seveso accident].

After the explosion accident on July 10, 1976 in Seveso (Italy), material from 30 interrupted pregnancies and from 4 spontaneous abortions was investigated by embryological and histomorphological studies. No indications of mutagenic, teratogenic or fetotoxic effects of TCDD could be found. The cases of spontaneous abortion, albeit more suspect for dioxin damage, showed different morphological alterations obviously due to a variety of causative factors independent of TCDD. On the other hand it is not possible to exclude entirely an embryotoxic effect of TCDD because in the majority of cases the fetal tissues were incomplete.

Abnormalities, Drug-Induced↗

Fetal limb deformities due to amniotic constrictions (a possible consequence of preceding amniocentesis).

The nature and origin of circular constrictions and intrauterine amputations can be studied more effectively in the fetus than in the newborn. Two cases of fetal micro- and syndactyly secondary to ring constrictions are discussed with respect to morphological processes. The amniotic membranes display active chorionic proliferation in addition to amniotic rupture and passive string formation. Moreover, association between the origin of amniotic bands and preceding amniocentesis seems to be possible in one case though it is difficult to ascertain.

Amniocentesis↗

Dysgerminoma in Turner's syndrome.

The importance of the Y-chromosome for the germ cell tumour development in gonadal dysgenesis has been emphasized many times. In contrast, only two cases of dysgerminoma or gonadoblastoma had been published so far in the XO-Turner's syndrome. With this report, another case of Turner's syndrome developing a dysgerminoma in a gonadal streak is presented. No Y-chromosome containing stemline could be detected in the patient nor in the tumour. A primary genetic etiology or a mechanism related to early secondary regression or dysgenesis of the gonad are discussed as causative factors in germ cell tumour development within gonadal streaks.

Adult↗

[XX-male-syndrome. Pathogenesis and aspects of diagnostic pitfalls (author's transl)].

A boy with XX-karyotype displayed classical features of Klinefelter's syndrome. In the nuclei of hair root cells Barr-bodies were present as well as brightly fluorescent (F-)bodies resembling closely a Y-body. In lymphocyte metaphases, however, this F-body of the interphase nuclei corresponded to a brightly fluorescent segment of the short arm of a D15-chromosome was found in the father's karyotype. This case does not give convincing support to any of the theories suggested in the etiology of the XX-male phenomenon.

Adolescent↗