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Biomedical subjects

P Bisschop

Publications and source records attributed to P Bisschop.

At least 19 recordsLinked to original sources
PubMed2004

Intraoperative measurement of parathyroid hormone in minimally invasive surgery for parathyroid adenoma.

INTRODUCTION: In the past bilateral neck exploration was the gold standard for successful surgical management of primary hyperparathyroidism. More restricted procedures have been introduced recently thanks to imaging techniques and intraoperative parathyroid hormone assay confirming eradication of hyperfunctioning tissue. METHODS: Thirty patients operated for parathyroid adenoma were submitted to intraoperative PTH determination with Quick Pack immunochemiluminescent assay (Nichols lab.) prior to excision and 5, 10 and 20 minutes after removal of the presumed hyperactive gland. Eleven patients were operated on by a minimally invasive procedure with videoassistance. RESULTS: Response to excision of the hyperfunctioning gland was evidenced by a significant decrease of PTH levels (50% of initial value) in 26 patients. Plasma PTH levels decreased by at least 80% of pre-excisional value after 20 minutes, 70% after 10 minutes and by 50% after 5 minutes. In 2 cases, significant decrease of PTH was obtained after 45 and 60 minutes respectively. In 2 other cases, the adenoma could not be found and there was no decrease of PTH even after extensive exploration of the neck. In the 11 patients who underwent minimal invasive surgery, 2 were converted to open neck surgery: in one case the adenoma was not accessible in the upper part of the neck, in the other case the hyperfunctioning gland remained undiscovered. CONCLUSION: intraoperative measurement of PTH should be considered a reliable and reproducible method for evaluation of the secreting activity of a parathyroid gland. The Quick Pack method has the advantage of confirming that the hyperactive gland has really been eradicated and consequently of considerably reducing operating time and avoiding extensive exploration of the neck.

Adenoma↗
PubMed2001

Tracheoesophageal fistula: case report and review of literature.

The case of a 44 year old woman with progressive postoperative dysphagia and food inhalations complicated by recurrent pulmonary infections, due to a tracheoesophageal fistula (TEF) is reported. Some months earlier, this woman had been operated for a cerebral aneurysm with hemiplegia and aphasia. For several months, pulmonary and feeding difficulties had been attributed to neurological status. Wide TEF was diagnosed by bronchoscopy, confirmed with fistulography. Surgical closure was performed: the oesophagus was sutured, and covered with fascia and a segment of the cervical trachea was resected with end-to-end anastomosis. Acquired nonmalignant TEF is an uncommon disorder with a high degree of morbidity and mortality. The etiology of those TEF is still unclear: traumatic intubation, elevated endotracheal tube cuff pressure, nasogastric tube, inflammation, poor general conditions,.... A better knowledge of the predisposing factors and physiopathology could decrease the number of acquired TEF.

Adult↗
PubMed2001

Bilateral chylothorax after left radical neck dissection.

Bilateral chylothorax, as a complication of neck dissection, is very rare as evidenced by the 11 cases reported in the literature up to date. We present an additional case of bilateral chylothorax following a left radical neck dissection and concomitant chylous neck fistula. This case was successfully treated by chest drainage and total parenteral nutrition. Early diagnosis of chylothorax is urged due to the consequences on metabolism and respiratory conditions. Management by aspiration drainage is usually sufficient to control pleural effusions.

Carcinoma, Squamous Cell↗
PubMed2000

Clinical advantage of abscess tonsillectomy in peritonsillar abscess.

At the moment, regardless of the prevalence of the peritonsillar abscess (PTA), a definite protocol concerning the treatment of PTA has not yet been established and the treatment remains controversial. In the treatment of PTA the two most used therapeutic approaches are compared in this short study carried out on 16 patients. A group of patients presenting PTA received an abscess tonsillectomy (AT) is compared with another group treated with aspiration and subsequently operated on with interval tonsillectomy (IT). The results show obviously that the abscess tonsillectomy is better than the interval tonsillectomy in every aspect of treatment. The hospitalization time and global costs are also reduced. So when a young person has PTA and once the indication of tonsillectomy is posed, the operation has to be carried out "à chaud".

Adult↗
PubMed1999

The levels of expression of galectin-1, galectin-3, and the Thomsen-Friedenreich antigen and their binding sites decrease as clinical aggressiveness increases in head and neck cancers.

BACKGROUND: The aim of this study was to investigate whether an increase in malignancy level is accompanied by significant modifications of the expression of galectin-1, galectin-3, and Thomsen-Friedenreich antigen (T antigen) as well as the expression of binding sites for these three markers in head and neck squamous cell carcinomas (HNSCCs). METHODS: Immunohistochemical and glycohistochemical staining reactions were carried out with antibodies, labeled lectins, and a custom-made neoglycoprotein on the basis of histologic slides from a retrospective series of 40 normal and 75 HNSCC formalin fixed, paraffin embedded tissues, and were quantitatively described with the aid of computer-assisted microscopy. RESULTS: Whatever the histologic type, the epithelial tissues in HNSCC exhibited very significantly (P < 0.01 to P < 0. 0001) lower amounts of galectin-1, galectin-3, and T antigen and their respective binding sites than their corresponding normal counterparts. The tumors of the larynx differed very significantly (P < 0.0001 to P < 0.000001) from all the other tumor types. A loss of differentiation in the HNSCCs is accompanied first by the loss of expression of galectin-3 and galectin-3-reactive sites and then by that of the T antigen and its binding site(s). The opposite feature was observed when the parameters associated with the TNM classification were taken into account. The negative lymph node HNSCCs could be distinguished (P = 0.02) from the positive lymph node HNSCCs on the basis of a loss of galectin-3 expression. The modifications occurring in the extent of expression of galectin-1 and galectin-1-reactive sites were relatively marginal in comparison with those observed for galectin-3-dependent and T- antigen-dependent staining. CONCLUSIONS: The decrease in the extent of expression of galectin-3 and galectin-3-reactive sites, T antigen and T antigen-binding sites, and, to a lesser extent, galectin-1 and galectin-1-reactive sites correlates significantly with an increasing level of clinically detectable HNSCC aggressiveness.

Adjuvants, Immunologic↗
PubMed1999

An unusual case of squamous cell carcinoma of the nose.

A 49-year-old man presented with a tumoral lesion of the tip of the nose which had been manifest for 2 months. Within a few weeks, the tumour increased in size and became infiltrated. The biopsy showed a squamous cell carcinoma. Treatment consisted of a radical surgical excision.

Carcinoma, Squamous Cell↗
PubMed1998

Can higher grades result in fewer friends? A reexamination of the relation between academic and social competence.

Although it has been widely assumed that the two domains of social and academic competence are independent, significant positive correlations have recently been found. The present study focused on peer judgments of social competence. Data on 157 secondary school students revealed significant negative correlations. Further analysis was based on Coleman's (1961) explanation that intellectual students are willing to work hard at a relatively unrewarded activity. The results here confirm this view; a significant interaction effect was found for academic effort, academic subject, and academic achievement. It is argued that the contrasting correlations between academic and social competence may be explained by the various operationalizations of social competence.

Achievement↗
PubMed1998

Parameningeal rhabdomyosarcoma. Report of 19 cases.

Parameningeal rhabdomyosarcomas are associated with a poor long term survival. This is due to the fact that they are aggressive tumours with early involvement of the skull base. The authors report a series of 19 cases between 1984 and 1995 with a relative proportion of children, male patients and tumours of embryonal type. Three patients were operated on and only one of them was found with tumour free margins. Systemic chemotherapy using the VAC-VAd protocol was administered in 18 patients and intrathecal chemotherapy was delivered in 5 patients with involvement of the skull base. Nine patients were irradiated with doses varying from 45 to 55 Gy. Twelve patients died from 20 days to 4 years after initial treatment; 6 were lost to follow up and only one patient is living without any evidence of disease after 11 years.

Adolescent↗
PubMed1998

Chondroma of the trachea.

The case of a 76 year old man with a progressive upper respiratory distress due to a chondroma of the trachea is reported which necessitated a segmental tracheal resection with end-to-end anastomosis and restoration of the initial tracheal lumen. This case report is illustrative of a rare benign disease (10 cases described till today) originating from the cartilaginous rings of the trachea. The tumor usually appears as an upper airway obstructing syndrome and endoscopy is essential for establishing the diagnosis. Laser resection can be recommended for the treatment of limited lesions, whereas tracheal resection with end-to-end anastomosis is recommended for more advanced chondroma because it is prone to local recurrence and potentially exposed to malignant transformation into chondrosarcoma.

Aged↗
PubMed1998

[Osteosarcoma of the jaws. Apropos of 12 cases].

We report 12 cases of osteosarcoma (10 located in the mandible and 2 in the maxilla). There were 8 men and 4 women who were older than usually observed in osteosarcoma at other sites (8 of 121 patients were over 30 and the average age was 34 years). Clinical signs were variable. Bone tumefaction was the most frequent sign, with a diameter greater than 5 cm in most cases (10 out of 12). Surgery alone was used for 8 patients and radiosurgery for 3. Follow-up is available for 8 patients. All presented local recurrence with extensive tumors progression. All died within an interval of 3 to 30 months despite palliative surgery and/or radiotherapy or chemotherapy.

Adult↗
PubMed1998

[Value of laser CO2 myringotomy in the treatment of seromucous otitis].

To date serous otitis media is usually treated by surgical setting of ventilating tubes. This technique provides good results on auditory acuity, however, complications such as chronic otorrhea, tympanosclerosis and tympanic perforation are rather frequently encountered. We present the results of our technique for treatment of serous otitis media consisting in a CO2 laser myringotomy. This technique was applied in 20 consecutive adult ears. The operatory microscope was connected with a co-axial CO2 laser device. The 20 myringotomies performed without insertion of ventilating tubes by this technique were all closed after 4 weeks with an average closing time of 17 days with no complications. In 60% of the cases, the serous otitis media was cured after a period of three months. CO2 laser myringotomy is a valuable alternative technique in the treatment of serous otitis media.

Adult↗
PubMed1997

Undifferentiated carcinoma of the nasopharynx and leukemoid reaction: report of case with literature review.

A case of undifferentiated carcinoma of the nasopharynx presenting as a cervical mass associated with a paraneoplastic neutrophilic leukemoid reaction is reported. The diagnosis of undifferentiated nasopharyngeal carcinoma of the Regaud type was established by the presence of aggregates of epithelial neoplastic cells separated by areas of reactive lymphoid cells; the epithelial nature being confirmed by the positivity for epithelial markers (AE1/AE3, EMA). Serum IL-1a, GM-CSF and TNF alpha remained undetectable suggesting that these factors were not involved in the occurrence of the paraneoplastic leukemoid syndrome.

Adult↗
PubMed1995

[Surgical treatment of iatrogenic injuries of the trachea].

Surgical treatment of iatrogenic tracheal traumata. Eight cases of tracheal resection with immediate anastomosis in tracheal stenosis due to prolonged intubation are reported. Resection-anastomosis surgery is compared to recalibration technique.

Adolescent↗
PubMed1988

[A case of (benign) teratoma of the nasopharynx].

The authors relate a case of a benign tumor (teratoma) sitting in the nasopharynx of a 10-year-old boy. A short review of the literature is presented: speculations over the origins of these tumors, possible diagnosis, treatments... The authors insist on the necessity of realizing some investigations (X-rays, fibro-endoscopy) when regarding a posterior nasal obstruction.

Child↗
PubMed1988

[Sarcomatoid carcinoma of the larynx].

In this paper the clinical and pathological aspects of a case of sarcomatoid carcinoma (spindle cell squamous carcinoma) of the larynx are reported. The diagnosis is confirmed by immunohistochemical analysis.

Carcinoma↗