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Biomedical subjects

B Habanec

Publications and source records attributed to B Habanec.

At least 19 recordsLinked to original sources
PubMed2000

[Plexiform fibrohistiocytic tumor of soft tissues and bone].

Plexiform fibrohistiocytic tumor is a rare lesion which has been reported only in the dermis and subcutis so far. We present two cases in this location and an additional one localized in the proximal epiphysis of the tibia. A case with crural location showed predominance of plexiform tumorous nodes with fibrohistiocytic arrangement. The nodes were composed of spindle-shaped myofibroblasts with admixture of histiocytes and giant multinucleated osteoclast-like cells. In another case the tumor of axillary soft tissues featured mostly plexiform bundles of spindle-shaped myofibroblast-like cells reacting positively with actin and CD 68 antibodies; ultrastructurally, they contained numerous dense lysosomal inclusions with myelin figures. The bone tumor was composed of hyalinized fibroblastic component with disperse fibrohistiocytic nodes. Despite a semimalignant character of the lesion there was no recurrence in our cases during the 2-6 year postoperative period.

Adult↗
PubMed1998

[Effect of H. pylori eradication regimes on the proliferation index of gastric mucosa].

Eradication regimes with the blocking agent of the proton pump and without it do not influence the activity of cell division after treatment of Helicobacter pylori (H.p.) when using cytoflowmetric evaluation. The non-significant difference in proliferation activity of the gastric mucosa after treatment of H.p. can be also a sign of more rapid repair of the gastric mucosa after elimination of the inflammatory elements.

Cell Division↗
PubMed1998

[Gangliocytic paraganglioma of the duodenum].

Gangliocytic Paraganglioma of the duodenum is rare neuroendocrine tumor. This type of the tumor can cause bleeding into the gastrointestinal tract and epigastric pain in this region. It can be difficult to differentiate this tumor from the primary tumor of the head of the pancreas growing secondary to the duodenum. The authors describe one such misdiagnosed case treated finally successfully by hemipancreatodecodenectomy.

Diagnosis, Differential↗
PubMed1997

[Tests for teaching pathologic anatomy].

A teaching database for pathology was prepared comprising around 1250 questions. Five answers belonged to each question, only one of them being correct. Preparation of questions was partly based on testing sets from Medical School of the University of Loma Linda, Ca., partly on those used in 2nd Department of Pathology, Masaryk University Medical School, Brono. In addition, set of computer programmes for automatic generation, printing and evaluation of tests was prepared. They were verified with Brno students.

Education, Medical, Undergraduate↗
PubMed1993

[Bronchopulmonary dysplasia].

Bronchopulmonary dysplasia is a most frequent contemporary lesion of the lung in early childhood. It is characterized by clinical symptoms (neonatal respiratory distress syndrome) and by X-ray picture reflecting progressive morphological changes in the respiratory tract, i.e. in trachea, bronchi, bronchioles, and pulmonary acini, followed by interstitial pulmonary lesion. As usual, bronchopulmonary dysplasia is forerun by hyaline membranes and may be associated with or followed by interstitial emphysema. Pathogenetic participants are toxicity of highly concentrated and long administered oxygen, artificial mechanical ventilation with an intermittently positive pressure, barotrauma first of immature lung causing emphysema and pneumothorax and pneumomediastinum, lung edema, shortage of A and E vitamins and ceruloplasmin deficiency. Morphological changes in bronchopulmonary dysplasia are alike diffuse alveolar damage in bigger children or adults. Nevertheless, neonatal changes differ from later pulmonary lesion by evolving in an immature tissue and by being complicated with necrotizing "obstructive" bronchiolitis.

Bronchopulmonary Dysplasia↗
PubMed1992

[Histiocytosis X and the orbit in children].

Histiocytosis X, a clinical entity which was not defined and classified exactly so far, is manifested by a varied range of clinical manifestations. In rare instances the affection of the orbit is the only and first symptom of the disease. The authors present an account of three children. In one isolated affection of the orbit with a non-inflammatory swelling of the external portion of the upper eyelid was the first symptom of the disease. In the other two patients with the acute multifocal form of histiocytosis X exophthalmos developed only 3 and 7 months resp. after establishment of the diagnosis. In the discussion of symptoms, the prognosis and treatment the authors are inclined to believe that at present the prognosis of multifocal form of the disease is not always adverse. In the frequently difficult differential diagnosis of orbital lesions histiocytosis X should be considered as one of the possible causes of affections of the orbit in children.

Child, Preschool↗
PubMed1989

[Reaction of the trachea after long-term presence of a tracheostomy cannula in an experiment].

The authors investigated in two groups of animals (rabbits, goats) the influence of the prolonged presence of a cannula in the trachea. The greatest differences were found in all groups of animals in the area of the stoma. In rabbits with the period of cannulation the originally slightly suppurative inflammation of the wall and adventitia changed gradually into a non-suppurative inflammation which reduced and disappeared at the end of the experiment. In the group of goats the proliferative exudative inflammation near the stoma with a predominance of leucocytes persisted, while in a more peripheral direction from the stoma the inflammation became non-suppurative with a predominance of mononuclear cells. The prolonged presence of a plastic cannula without a cuff thus did not induce a situation leading to permanent anatomical stenosis.

Animals↗
PubMed1989

[Peroperative biopsy and cytologic diagnosis of pulmonary lesions].

Smears obtained by thin-needle aspiration and scrapings from 116 patients with pulmonary lesions were evaluated on operation after opening of the thoracic cavity. With regard to the macroscopic character of the process and clinical data it thus proved possible to differentiate 37 benign lesions and 79 malignant tumours which could be identified in the majority. The method proved to be rapid, reliable and economical, if aptly used and when the diagnosis is made by an experienced worker.

Biopsy, Needle↗
PubMed1989

[Congenital neuroblastomas].

A group of 2,576 autopsies of children of the age of 0 to 15 years (made between 1978 and 1987) comprised 14 congenital (neonatal) tumours (among 93 tumorous lesions). Teratomas were the most frequent congenital tumours followed by neuroblastomas (4 and 3 cases). Neuroblastomas grew from cervical and thoracoabdominal sympathicus and from the right adrenal medulla. The most frequent and most extent hematogenic dissemination concerned liver, microscopical examination found dissemination in various organs as well as a lymphatic spread to regional lymph nodes (in 2 cases). One case was characterized by an exclusive continual destructive growth in retroperitoneum and posterior mediastinum with 2 macroscopical secondaries in skeleton. Pathognomic differentiated structures were always found by light microscopy. Differential diagnosis of round cell tumours of infancy was discussed with a concise exposure of symptomatology and autoptic findings of neuroblastomas according to congenital cases from literature.

Adolescent↗
PubMed1986

[Aneurysmal bone cyst of a rib].

Aneurysmatic bone cyst is rare in ribs; only 37 cases were found in literature up to 1984. In a group of 21 children suffering from aneurysmatic bone cyst only one 13 year-old girl had the lesion in sternal part of the 2nd rib.

Adolescent↗
PubMed1985

[Tumors of the thyroid gland in childhood--study of biopsy material].

A group of 29 biopsies from resected thyroid gland was represented by 5 boys and 24 girls of the age under 15 years; the mean age was 12,7 years. There were 7 cases of colloid adenoma, 5 of follicular adenoma, 5 of atypical adenoma and 5 of papillary carcinoma among them. A basedowian goiter was verified in 4 cases, Hashimoto-type thyroiditis was found once, thyroid gland was lacking twice. A shift between clinical and pathomorphological diagnoses was remarkable.

Adenoma↗
PubMed1984

[Problems with fine-needle puncture examination of the prostate].

The technology of fine-needle aspiration of prostatic tissue was described and its results discussed in a group of 45 patients. Demonstration of findings included: normal cytology, adenomyomatous hyperplasia with mosaic pattern of epithelial cells, acute purulent inflammation, chronic inflammation with pseudoxanthomatous lipophages , seminal vesicles with atypical non-cohesive epithelial cells, and neoplasia.

Adult↗