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Biomedical subjects

D Fahlenkamp

Publications and source records attributed to D Fahlenkamp.

10 recordsLinked to original sources
PubMed1992

[Laparoscopic diagnosis and therapy of cryptorchism].

Between May 1987 and December 1991, laparoscopy was performed in 33 selected children with 40 nonpalpable testes, to localize the testes. Of 40 testes sought, 16 were present (14 intra-abdominal and 2 inguinal), and in 24 cases testicular aplasia was verified. The authors describe the technique of laparoscopy for unilateral and bilateral undescended testes. Exact anatomical localization of the testes by laparoscopy facilitated accurate planning of operative repair. The advantages of laparoscopy compared with ultrasound and MR imaging in 14 selected patients are described. In 3 patients with an intra-abdominal hypoplastic testis we performed laparoscopic orchiectomy. This new operative procedure is described. Laparoscopic orchiectomy is minimally invasive, offering a practicable alternative to orchiectomy in the case of an atrophic or hypoplastic abdominal testis. No complications were noted.

Adolescent↗
PubMed1990

[Agenesis of the inferior vena cava].

It is reported on an asymptomatic rare vascular anomaly, the agenesis of the inferior vena cava. The knowledge of such malformations is important in operative procedures.

Adult↗
PubMed1988

[Treatment of idiopathic varicocele in children and adults by occlusion of the testicular vein with a detachable balloon].

The results of varicocele treatment by balloon occlusion of the testicular vein in 22 children and 29 adults are compared with the results after operative ligation of the testicular vein in 95 patients. In 6 out of 22 children (27%) the varicocele persisted after balloon occlusion, compared with 3 out of 29 adult patients (10%). These results in adults are comparable to the results after operative ligation of the testicular vein, whereas the complication rate was significantly lower after balloon occlusion in comparison with operative treatment.

Adolescent↗
PubMed1988

[Clinical experiences in 210 percutaneous removal of kidney and ureteral calculi].

The introduction of percutaneous nephrolithotomy and ureterolithotomy has greatly widened the therapeutical spectrum of urolithiasis. In this paper indications and contraindications of percutaneous stone removal will be discussed as well as techniques of this procedure. 210 percutaneous stone operations were performed after an initial training period primarily using local anesthesia (neuroleptanalgesia). This operative procedure allowed stone removal in patients otherwise inoperable because of increased operation risk or of advanced age. With increasing experience the success rate has been improved, though the stage of difficulties in nephrolithotomy and ureterolithotomy has increased too. Percutaneous operation primarily in connection with extracorporal shock wave lithotripsy is the first treatment modality for patients with staghorn stones. Possible complications (bleeding, perforation, injury to neighbouring organs) and their treatment are discussed.

Adolescent↗
PubMed1987

[Clinical testis transplantation. Review of indications, surgical technic and results of auto-, allo- and isotransplantation].

Human testicular transplantation using microsurgical technique is gaining popularity. Since 10 years autotransplantation of the testis proved to be a surgical technique with a definitive place in the therapy of high abdominal cryptorchidism. It is a procedure to be employed in situations where appropriate mobilisation yields an ineffective orchidopexy. In a review of 130 cases in the literature a success rate of 87% is reported. The problems of diagnostic procedures, of the indication and the possibilities of ischemia protection are described. Iso- and allotransplantation of the human testis are reported from few centers, but the results are excellent. Therefore, the operative technique and the long-term results are described in detail.

Cryptorchidism↗
PubMed1985

[Contribution of urology in the interdisciplinary treatment concept of fertility disordered males].

The most important disturbances of male infertility are described in detail. The varicocele is in 30 to 40% the main cause of subfertility. 106 out of 125 patients are operated because of unability to conceive a child. Postoperatively, the results show a significant improvement of the sperm density, total sperm count, sperm morphology and the initial and late forward progression. 26% of the couples were achieve pregnancies. In obstructive azoospermia microsurgical repair is the preferable method. The obstruction, whether developmental or acquired, is most frequently at the epididymal junction. Vasography is performed intraoperative immediately before the planned reconstruction to demonstrate the block. In only 5 of 12 patients microsurgical repair was possible. The other patients had developmental abnormalities or scarring and long-distant obstruction. The diagnostic and therapeutic procedures in erectile impotence are described, 5 patients are operated by implantation of a penile prosthesis. The most important step in prophylaxis of infertility is the treatment of cryptorchidism. The therapy should be closed at the end of the second year of life. The role of testicular autotransplantation in selected cases is discussed. Because of more recent data suggest that a male factor is present in or contribute to as many as 50 per cent of the infertility problems and the urologist has the best training and expertise to examine and to diagnose disorders of the male reproductive tract, he should be at the forefront of treatment of these problems.

Constriction, Pathologic↗