Biomedical subjects

K Bilek

Publications and source records attributed to K Bilek.

93 records · Page 6Linked to original sources

PubMedDate not supplied

Prospective evaluation of the argon laser treatment of trachomatous trichiasis.

PURPOSE: To evaluate the effectiveness of argon laser photocoagulation for the treatment of trachomatous trichiasis. METHODS: This report presents a prospective, non-masked study of 22 patients (36 eyelids) with trachomatous trichiasis treated with the argon laser. Each abnormal lash was treated with a beam of 50- to 200-micron spot size, for 0.2 seconds, and 1 to 1.2 watts power. In 30 lids (83.3%) infiltration anesthesia was used and in 6 lids (16.7%) no anesthesia was used. RESULTS: Successful treatment with no evidence of recurrence was achieved in 55.5% of lids after one laser session. The remaining 44.5% of the lids required two or three sessions. The final success rate of the method was 88.9%. No complications were observed. The mean follow-up time was 10.6 months. CONCLUSION: Argon laser photocoagulation is an effective and safe method for the treatment of trachomatous trichiasis.

Aged↗

PubMedDate not supplied

Risk of progression in complex and atypical endometrial hyperplasia: clinicopathologic analysis in cases with and without progestogen treatment.

In most cases, the endometrioid adenocarcinoma of the endometrium is preceded by hyperplasia with different risk of progression into carcinoma. The original histologic slides from 560 consecutive cases with complex and atypical hyperplasia were re-examined to assess the interobserver-correlation. The hyperplasias were analyzed separately for their likelihood of progression to carcinoma in patients with and without progestogen hormonal therapy. In all cases, a fractional re-curreting was performed to establish the state of the disease. The leading symptom was vaginal bleeding in 65.5% of the cases in the postmenopausal period. Eighty-six percent of the patients presented with obesity (BMI > 30 kg/m(2)), 23% had had an exogeneous use of estrogens. Twenty-two cases were reclassified as simple hyperplasia and excluded from further analysis. The interobserver-correlation was 91% for complex, 92% for atypical hyperplasia, and 89% for endometrioid carcinoma, representing an overall correlation of 90%. Two percent of the cases with complex hyperplasia (8/390) progressed into carcinoma and 10.5% into atypical hyperplasia. Fifty-two percent of the atypical hyperplasias (58/112) progressed into carcinomas. In the case of progestogen treatment (n = 208; P < 0.0001) 61.5% showed remission confirmed by re-curetting, compared with 20.3% of the cases without hormonal treatment (n = 182; P < 0.0001). Endometrial hyperplasia without atypia is likely to respond to hormonal treatment. Especially in postmenopausal situation, atypical hyperplasia should be treated with total hysterectomy.

Adenocarcinoma↗

PubMedDate not supplied

[The value of placental histology for the detection of genetically-induced abortions].

The majority of early spontaneous abortions is caused by genetic disorders. Chromosomal aberrations do not only imply characteristical morphologic alterations in embryo/fetus, but also in chorionic villi. Its possible to draw conclusions through the combination of a small amount of histological findings on chorionic villi to explain the kind of aneuploidy. Among 968 early spontaneous abortions 18.3% were defined as genetically caused by histological examination. 87.6% are probably trisomies, 7.3% polyploidies. 5.1% were diagnosed as complete hydatidiform moles with a diploid, androgenetic chromosome set. The value of histological examination of early spontaneous abortion tissue are discussed and it is pointed out to remaining problems. In a different percentage it is possible to establish the type of aneuploid by microscopic examination alone. Frequently there are sings to allow the conclusion there is a developmental disorder like genetic aberration.

Abortion, Incomplete↗