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Biomedical subjects

B Czernobilsky

Publications and source records attributed to B Czernobilsky.

At least 109 records · Page 6Linked to original sources
PubMed1979

Thymic deficiency in Down's syndrome.

Children with Down's syndrome (DS) often have small and abnormal thymuses, with lymphocyte depletion, diminution of the cortex, and loss of corticomedullary demarcation--a picture resembling thymic involution. Besides this, they have markedly enlarged Hassall's corpuscles, some surrounded by a sheath of lymphocytes. Patients with DS are known to have increased numbers of respiratory infections; they also have a higher incidence of lymphatic leukemia than do individuals who do not have DS. Studies of cell-mediated (thymic-dependent) immunity demonstrate that children with DS have both diminished numbers of T cells as well as functional deficiency of these cells.

Child↗
PubMed1979

A histologic study of ovarian endometriosis with emphasis on hyperplastic and atypical changes.

One hundred ninety-four cases of ovarian endometriosis, encountered during a 3-year period, were studied. In addition to endometrial-type epithelium and stroma that were present in each of these cases, oviduct-type epithelium was demonstrated in 26, papillary epithelial-lined projections in 7, and hobnail cells in 36 patients. Forty-three cases showed reactive epithelial changes, probably due to inflammation and regeneration. There were 4 cases of adenomatous hyperplasia. Severe epithelial atypism was seen in 7 patients (3.6%), 1 in conjunction with adenomatous hyperplasia. Although the areas of severe epithelial atypism in ovarian endometriosis may be of reactive origin, one must also consider the possibility that in some instances these atypical changes may constitute a neoplastic potential.

Adult↗
PubMed1978

Salpingitis in ovarian endometriosis.

A histologic study of 87 cases of ovarian endometriosis with salpingectomy revealed 29 cases (33%) in which the removed fallopian tubes showed chronic salpingitis. Tubal obstruction could be demonstrated in only one of these patients. Tubo-ovarian adhesions were found in 15 patients (17%) and in only 7 of these in association with salpingitis. Although the patients in the present series did not consult their physicians because of infertility, but rather for other symptoms related to pelvic endometriosis, the finding of chronic salpingitis in 33% of the cases suggests that salpingitis may play a role in the infertility associated with endometriosis, possibly through altered tubal secretion.

Acute Disease↗
PubMed1978

Endometritis and infertility.

Endometrial biopsy is an essential tool in the evaluation of the infertile couple. Among the various causes of infertility which may be elucidated by such a biopsy, endometritis plays a significant role. In this review endometritis has been subdivided into three distinct pathologic entities: acute, chronic, and fibrotic. Detailed histologic features are discussed separately for each of these varieties. Most of the acute inflammations of the endometrium are cauased by bacteria. They are usually of short duration, respond well to treatment, and only rarely are associated with long-standing infertility. Chronic endometritis, on the other hand, can be caused by a variety of agents such as bacteria, viruses, and parasites. However, in the majority of cases with chronic endometritis the etiology cannot be determined and these are then considered nonspecific. Tuberculous endometritis, which is discussed under the heading of chronic endometritis, constitutes a common cause of infertility in certain countries but much less so in the United States. Other less common conditions such as mycoplasma infection and cytomegalic virus infection, have also been associated with reproductive failure. However, chronic endometritis, especially the most common so-called nonspecific type, is a relatively uncommon cause of infertility. The syndrome of intrauterine adhesions or synechiae has been classified here as fibrotic endometritis because of the pathogenesis and histopathology of this lesion. This entity is commonly associated with infertility and may constitute the end result of a long-standing inflammatory process in the endometrium. The diagnosis of endometritis is not a simple one and necessitates close cooperation between the clinician and pathologist. Pertinent clinical and detailed histopathologic data have to be exchanged between the treating physician and pathologist, especially in cases of infertility, in order for the patient to have benefit from the examination of endometrial tissue obtained.

Acute Disease↗
PubMed1978

Vaginal adenosis in a 48-year-old woman.

Vaginal adenosis was diagnosed in a 48-year-old woman who had been on estradiol therapy in the past. The possible role of hormonal factors in the development of vaginal adenosis in older women is discussed.

Biopsy↗
PubMed1977

Testicular feminisation syndrome: unusual gonadal histology in an elderly patient.

The gonads of an elderly patient with a typical testicular feminisation syndrome are described. The unusual histological features consisted of total absence of testicular tubular structures or remnants thereof and distinct proliferation of smooth muscle bundles. In addition, there was fibrous proliferation, areas of ovarian stroma, and rare Reinke crystalloids within Leydig cells. The complete tubular absence may have been the result of fibrous replacement related to patient's advanced age, while the muscular proliferation may have been of hamartomatous nature. Thus, it seems that in elderly patients with testicular feminisation syndrome, the histological appearance of the gonads may vary considerably from that in younger individuals, and in such cases the correct diagnosis should be based mainly on clinical and cytogenetic findings.

Aged↗
PubMed1977

Attempted induction of granulosa cell tumor in Balb-C mice by gonadotropin administration.

An attempt of granulosa cell tumor (GCT) induction by prolonged administration of exogenous pregnant mare's serum gonadotropin (PMSG) to young, mature, and middle-aged Balb-C mice resulted mainly in stromal luteal cell proliferation. 48.9% of young mice, 64.5% of mature mice and 65% of middle-aged mice developed luteal cell proliferation. This effect seemed to be dependent on duration of treatment, mainly in young mice. Young mice injected for less than 6 months developed significantly less luteal cell proliferation than those injected for more than 6 months. Only 1 GCT was found. This study seems to support the contention that besides gonadotropin stimulation, other factors may be involved in GCT development. A large number of PMSG-injected mice developed generalized lymphosarcoma, the mechanism of which remains unknown.

Age Factors↗
PubMed1977

Immune deficiency of T system with possible T cell regulatory activity defect.

The occurrence of T system immunodeficiency in an infant together with excessive production of IgM and, to a lesser degree, of IgG and IgA, is an unusual combination. A case is reported in which an unremitting lung infection with lymphadenopathy and hepatosplenomegaly developed in a previously healthy two-month-old infant. Leukocytosis with lymphocytosis, monocytosis and eosinophilia was rapidly followed by leukopenia and lymphocytepenia after a blood transfusion for anemia. There was a transient clinical remission, but on relapse 10 days later, quantitative and functional T cell deficiency was found together with increased IgG and IgA and with IgM values reaching 50 times greater than normal. Thymic humoral factor was successful in vitro in increasing the number of identifiable T cells (E rosetts) as well as T cell function (leukocyte migration inhibition factor production). However, the infant died suddenly, and at autopsy evidence of a generalized inflammatory reaction compatible with a viral infection was found. The thymus was small, hypoplastic and hypocellular. It is speculated that the T system deficiency may have been acquired following Epstein-Barr virus infection, and that T cell regulatory activity of immunoglobulin production was defective.

Antibodies, Viral↗
PubMed1977

The prevalence of cervicitis, reserve cell hyperplasia, squamous metaplasia, and cervical dysplasia in Jewish women.

The prevalence of cervicitis, reserve cell hyperplasia, squamous metaplasia, and dysplasia was studied in Jewish women and compared to that reported elsewhere in non-Jewish populations. The study was based on a histologic review of 250 women whose cervices were clinically either normal or presented with minor changes, and of 50 cases of squamous cell carcinoma. The findings indicate that the prevalence of the above-mentioned histologic features in the 2 groups of Jewish women is similar to that observed in comparable groups of non-Jews. It thus appears that in a majority of Jewish women the histologic spectrum leading to cervical cancer unexplicably stops at the dysplastic stage. On the other hand, the results of this study may possibly cast doubt on the well-documented evidence establishing dysplasia as a pre-cancerous lesion. For further elucidation of these problems cytologic studies in matched Jewish and non-Jewish populations will be carried out.

Adult↗
PubMed1976

Lymphocytic infiltration in endometrial adenocarcinoma. Correlation with histologic differentiation, clinical staging and prognosis.

Lymphocytic infiltration in endometrial adenocarcinoma was evaluated in curettings from 50 patients and correlated with histologic differentiation, clinical staging and prognosis. In spite of the absence of any significant correlation between lymphocytic infiltration and the various parameters investigated, the presence of a marked infiltrate in 46% of the cases suggests that in endometrial adenocarcinoma, as in other neoplasms, a cell-mediated immune response does indeed exist, but warrants further investigation by more refined methods.

Adenocarcinoma↗