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C Chleq

Publications and source records attributed to C Chleq.

12 recordsLinked to original sources
PubMed1992

Nucleoli and AgNOR proteins in 32 cases of primary breast carcinoma. Spatial pattern of interactions between 50 clinical and histometric criteria.

The purpose of this paper is to analyze a method allowing selection of the best morphometric criterion for quantifying AgNOR proteins under conventional observation conditions by light microscopy. We determined 50 parameters for 32 cases of primary breast carcinoma. For each case, three 100-nucleus samples (tumor center and periphery on a Giemsa-stained, 3-microns tumor section, periphery on a silver-stained section) were quantified. Distribution-free multidimensional data analysis was used to explore the geometric significance of the coefficient of correlation. This analysis revealed a clinical message linked with the largest "nucleolar structure" (nucleolus or AgNOR clump) per nucleus on the tumor periphery. Tumor recurrence or death correlated only with the coefficient of variation of the "nucleolar/nuclear" ratio of the greatest clump of AgNORs per nucleus periphery (CVRSa). The prognostic value of CVRSa is independent of that of conventional criteria, such as age, tumor size, Scarff-Bloom-Richardson grading and lymph node status. The largest AgNOR clump per nucleus may prove to be a further practical prognostic predictor.

Biometry↗
PubMed1991

Systemic mast cell disease associated with primary mediastinal germ cell tumor.

The first known case of systemic mast cell disease associated with a germ cell tumor is reported. Six months after the complete remission of a primary mediastinal germ cell tumor treated by chemotherapy and resection, a young man had a series of episodes of hypotension and syncope and, a few months later, a gastric hemorrhage and coagulation disorder. The diagnosis of systemic mast cell disease was made in view of bone marrow and liver biopsies. A transient circulating heparin-like anticoagulant was noted. The occurrence in a short period of these two unusual conditions, given previous knowledge of hematologic disorders associated with germ cell tumors, suggests that the present association is not a coincidence. Systemic mast cell disease should be considered among the hematologic disorders associated with a germ cell tumor.

Adult↗
PubMed1991

Histiocytic medullary reticulosis occurring with small cell lung carcinoma.

Haematophagocytic activity is a salient feature of malignant histiocytic medullary reticulosis. This potency has also been observed as an aberrant property of non-histiocytic malignant cells or as a benign histiocytic process in response to infections or malignancies. We report the case of a patient who presented simultaneously with a limited stage small cell lung carcinoma and a fatal reactive form of histiocytosis. We conclude that such a haematophagocytic syndrome may occur in the setting of small cell lung carcinoma s previously described in other malignancies.

Aged↗
PubMed1990

[Malignant mixed mesodermal tumor detected by uterine inversion. Apropos of a case. Review of the literature].

The authors report the anatomoclinical observation of an 82-year old patient presenting a mixed malignant mesodermal tumour (MMMT) revealed by a uterine inversion. The histological examination revealed sarcomatous and carcinomatous lesions with zones of chondroid metaplasia infiltrating largely the myometrium. A total vaginal hysterectomy, accompanied by radiotherapy, got the better of an early local relapse. The histogenetic hypotheses of MMMTs, the particular circumstances of the tumour revelation, as well as the methods of treatment are reviewed.

Aged↗
PubMed1990

Nucleolar topography of nuclei in histologic sections. Application of a nonparametric approach to the study of breast cancer and non-Hodgkin's lymphoma.

The position of the nucleolus within a near-convex nuclear profile was defined, without taking stereology into account, in terms of two distances, P and G, where P = pi p2/SN, G = pi 2/SN, p and g being, respectively, the smallest and greatest distances between the center of the nucleolus (considered as a disk) and the superficial nuclear membrane, and SN being the surface area of the nucleus. Nuclear elongation (ND) was defined by the ratio ND = SN/A, where A is the area of the largest inscribed disk. The nucleolus-nucleus ratio RS = Sn/SN (i.e., the surface of the nucleolus over that of the nucleus) describes the size of the nucleolus. A four-class classification of nucleolar topography was then developed from the model of an ellipsoid nuclear profile (1 less than ND less than 2.5), for which the probability that a randomly located nucleolus (with RS less than 0.23) will be classified as central (G less than 2.5 and 0.40 less than or equal to P less than 1) is less than 0.14, as paracentral (G less than 2.5 and 0.23 less than or equal to P less than 0.40) is less than 0.13, as "transversely eccentric" (G less than 2.5 and P less than 0.23) is less than 0.10 and as "longitudinally eccentric" (G greater than or equal to 2.5) is greater than 0.66. This theoretical distribution into four classes was compared to that of nuclear profiles in four cases of breast cancer and in typical cases of immunoblastic, centroblastic and Burkitt's non-Hodgkin's lymphomas. The findings illustrate the ability of this nonparametric method to indicate characteristic nucleolar locations in relation to the number of nucleoli, their size and their nuclear profile elongation.

Breast Neoplasms↗
PubMed1987

[Human recombinant leukocyte interferon alpha-2-A in 22 cases of metastatic malignant melanoma].

Twenty-two patients with metastatic malignant melanoma received either 36 X 10(6) U (15 patients) or 18 X 10(6) U (7 patients) of human recombinant interferon alpha-2-A daily for 3 months by the intramuscular route, with progressive increase of dosage. This was followed in responders by a maintenance treatment consisting of 3 intramuscular injections per week in the same doses as those received at the end of the induction treatment. Out of 18 patients assessable for effectiveness, 1 had complete remission (7 months +) and 3 had partial response (52,61 and 82 days respectively), an overall improvement rate of 22%. The main side-effects observed were: pseudoinfluenza syndrome (100%), fatigue (100%), somnolence (95%), anorexia (90%) and haematological disorders. Dosage reduction was necessary in 13 of the 15 patients receiving 36 MU. This study shows that human recombinant interferon alpha-2-A has antitumoral activity in metastatic malignant melanoma. Other studies, notably with therapeutic combinations, are needed to determine the optimal dosage regimen of the drug and to increase its effectiveness.

Adolescent↗
PubMed1985

[Mixed tumor of the breast (pleomorphic adenoma)].

Mixed tumor (pleomorphic adenoma) of the breast is a rare distinctive primary neoplasm. Its prognosis is comparable to the corresponding salivary neoplasm. Differential diagnosis can be difficult with metaplastic carcinoma containing bone and cartilage, specially on small biopsies as emphasized by the present observation.

Aged↗
PubMed1976

[Colitis marginal to cancer. Apropos of 7 cases].

The authors report 7 new cases of colitis above a carcinoma. The study of these cases and of those reported in the literature shows the main pathological characteristics of the lesions and permits discussion of the pathogenesis. Chronic ischemia caused by an increase in intraluminal pressure above the neoplastic stenosis seems to be the main etiological factor.

Aged↗