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  • Title: [Endometriosis: clinical, histological and morphometric findings before and after Gn-RH agonist therapy].
    Author: Ruwe M, Donhuijsen K, Regidor PA, Leder LD, Schindler AE.
    Journal: Zentralbl Gynakol; 1998; 120(8):391-8. PubMed ID: 9757546.
    Abstract:
    After bioptical diagnosis of endometriosis, 81 patients were treated with GnRH-agonists buserelin or leuprolide for six months. Biopsies before and after treatment were used to test a semiquantitative score-system, regarding atrophy of glands and stroma cells. Furthermore glandular diameter, circumference and area of nuclei were examined morphometrically using a microscopic semiautomatical measuring system. Morphometrical and histological alterations during therapy were evaluated. Additionally, data suitable for predicting a possible therapeutic success were described. After therapy 40 patients still showed endometriotic implants (partial responder) in contrast to 41 cases without foci (total responder). Therapeutic effect of GnRH-agonists was proved in every respect: clinical complaints decreased markedly during GnRH-agonists therapy. Both buserelin and leuprolide treated groups revealed increase of atrophy and reduction of extension of stroma. Correspondingly morphometrical analysed parameters such as diameter, circumference and area of glands decreased during therapy as well as area of cytoplasm and nuclei. Except the diameter of glands, the leuprolide treated partial responder group (residual foci after GnRH-therapy) revealed a stronger therapeutic effect than the buserelin treated partial responder group. Obviously this effect seems to be produced by the stronger estradiol suppression of leuprolide. Pretherapeutic comparison of measured values pointed out a minor distinct endometriosis in the total responder group. Success or failure of therapy seems to depend more on the pretherapeutic degree of expression of endometriosis. Obviously the kind of applicated GnRH-agonist plays a minor distinct role. Morphometrical data of endometriotic foci appear to be appropriate to predict a possible therapeutic success of GnRH-agonist therapy. But because of many exceptions only a roughly estimated prediction is possible.
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