PMID- 8671332 OWN - NLM STAT- MEDLINE DCOM- 19961121 LR - 20190512 IS - 0268-1161 (Print) IS - 0268-1161 (Linking) VI - 11 IP - 4 DP - 1996 Apr TI - Transvaginal interstitial laser treatment of the ovary: a feasibility study in cows. PG - 808-13 AB - In 12 cows, transvaginal interstitial laser treatment (TILT) of the ovaries was performed using a neodynium:yttrium aluminium-garnet laser to investigate the feasibility of a new treatment approach for clomiphene-resistant patients with chronic hyperandrogenic anovulation. Powers of 1 and 2 W during 5 min of exposure were used. Sonographic changes of thermal damage during TILT, the extent and healing of the lesions by light microscopy and ultrasound during 3 month follow-up and adhesion formation were studied. During laser irradiation, a hyperechogenic zone developed around the fibre tip, with a mean +/- SD diameter of 4.4 +/- 2.0 mm at 1 W and 6.9 +/- 1.5 mm at 2. W. The mean diameters of the histological lesions 2 days after treatment were 7.3 +/- 2.5 mm at 1 W and 13.0 +/- 2.1 mm at 2 W. During follow-up, the mean diameter of both the histologically and the sonographically assessed lesions decreased, although transvaginal sonography (TVS) systematically and significantly underestimated the thermal damage. Lesions healed by fibrosis and no adhesions were present. TILT of the ovaries in cows is easy to perform and produces central or subcapsular necrosis without adhesions. TVS gives an indication of thermal damage but underestimates the extent of tissue damage in cow ovaries. Obviously, this study does not allow conclusions to be drawn concerning its safety and efficacy in man. FAU - Kaaijk, E M AU - Kaaijk EM AD - Laser Centre, Division of Gynaecology, Amsterdam, The Netherlands. FAU - Pieterse, M C AU - Pieterse MC FAU - Beek, J F AU - Beek JF FAU - van der Veen, F AU - van der Veen F FAU - ten Kate, F J AU - ten Kate FJ FAU - Lammes, F B AU - Lammes FB FAU - van Gemert, M J AU - van Gemert MJ LA - eng PT - Journal Article PL - England TA - Hum Reprod JT - Human reproduction (Oxford, England) JID - 8701199 SB - IM MH - Animals MH - Anovulation/*surgery MH - Cattle MH - Female MH - Follow-Up Studies MH - Laser Therapy/*methods MH - Ovary/diagnostic imaging/injuries/*surgery MH - Ultrasonography EDAT- 1996/04/01 00:00 MHDA- 1996/04/01 00:01 CRDT- 1996/04/01 00:00 PHST- 1996/04/01 00:00 [pubmed] PHST- 1996/04/01 00:01 [medline] PHST- 1996/04/01 00:00 [entrez] AID - 10.1093/oxfordjournals.humrep.a019258 [doi] PST - ppublish SO - Hum Reprod. 1996 Apr;11(4):808-13. doi: 10.1093/oxfordjournals.humrep.a019258.