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Biomedical subjects

C Van Loon

Publications and source records attributed to C Van Loon.

15 recordsLinked to original sources
PubMed2003

Residual appendicitis following incomplete laparoscopic appendectomy.

Growing popularity of laparoscopic interventions must bring along a thorough knowledge of possible complications inherent to the laparoscopic technique. With these two cases of residual appendicitis following incomplete appendectomy, the authors want to warn for this complication. Surgeons should be aware of residual appendicitis as a possible cause of acute abdomen at any time following a laparoscopic appendectomy.

Adolescent↗
PubMed2001

Carrier screening for cystic fibrosis in a prenatal setting.

Maternal prenatal cystic fibrosis (CF) screening was offered from September, 1997, to April, 1999, at the Ghent University Hospital, to couples undergoing prenatal diagnosis (amniocentesis) for reasons not related to CF. Fifteen minutes were devoted to explaining CF, CF screening, and the study protocol. The purpose was to assess the short- and long-term knowledge of CF, the attitude towards carrier screening, and carriership. A total of 314 couples entered the pilot study; 13 female CF carriers were identified. None of their partners carried an identifiable mutation. Our survey results show that information about CF and CF screening can be given effectively as part of antenatal care because most couples recalled important medical and genetic issues, valued the genetic test for CF, and seemed to cope well with the results. Risk estimates and actual numbers were more difficult to process and recall. From the small number of couples in which the woman alone was found to be a carrier, there was little or no evidence of marked distress.

Adolescent↗
PubMed2001

Stream segregation of narrow-band noise bursts.

Normally hearing adults heard rapid alternations of a pair of band-limited noise bursts that had flat spectra (in terms of equal-loudness weighting of components) and sharp band edges. The bursts differed in center frequency (CF), but were matched on overall intensity, on bandwidth (BW) on a log frequency scale, and (roughly) on pitch strength. Listeners judged the ease with which the sequence could be held together perceptually in a single auditory stream (vs. forming separate high and low streams). Involuntary segregation was examined as a function of the following measures of frequency separation of the alternating noise bands: (1) the closest band edges, (2) the most remote band edges, (3) the CFs of the bands on a logarithmic scale, and (4) the BWs. Segregation was best predicted from the separation of the two CFs on a log-frequency scale (very strong effect). Increasing the BWs of the two alternating bursts (the same size, in log frequency, for both bands) also led to greater segregation (very weak effect).

Adult↗
PubMed1999

Residual appendicitis following incomplete laparoscopic appendectomy.

Growing popularity of laparoscopic interventions must bring along a thorough knowledge of possible complications inherent to the laparoscopic technique. With these two cases of residual appendicitis following incomplete appendectomy, the authors want to warn for this complication. Surgeons should be aware of residual appendicitis as a possible cause of acute abdomen at any time following a laparoscopic appendectomy.

Abdomen, Acute↗
PubMed1992

Common bile duct foreign body: an unusual case.

A 59-year-old woman had symptomatic gallbladder stones. A laparoscopic cholecystectomy was performed using absorbable clips. Eleven weeks later, recent pain in the right upper quadrant and interscapular resulted in an ERCP. This examination demonstrated two Absolok Plus clips migrated in the biliary tract. We question the use of those clips and discuss the migration mechanism.

Absorption↗
PubMed1983

[Surgery of acute cholecystitis in patients 80 years of age or older].

In 17 Belgian surgical centers, 324 operations have been performed for acute cholecystitis in patients 80 years of age or older. In this group of patients: 1. The incidence of acute cholecystitis is hardly higher in women than in men. 2. The patients were operated within 24 hours of admission in 38% of cases. The main bile duct was surgically explored in 1/3 of patients. Cholecystostomy or simple drainage were used in 1/10 of cases only. 3. Operative mortality was 19%. It was higher for patients operated as emergencies than for delayed operations and higher also when the cholecystectomy was associated with an exploration of the bile duct. The ideal treatment for such patients should thus be a cholecystectomy with an endoscopic sphincterotomy.

Acute Disease↗
PubMed1983

[Implantation of a cardiac pacemaker in the octogenarian].

Thirteen centres, specialized in pacemakers and studying the implantation, brought together their material. Consequently, 785 patients living with a pacemaker (PM) were grouped. The average age at the time of the first implantation is 83,5 years old. The mortality of 7.5% as well as the morbidity of 16% lie very low. Nevertheless, their causes are discussed and compared to those resulting from other types of surgical pathologies on the octogenarian. It seems that the implantation of a PM, even on a person of 80 or older, is an efficient therapeutic gesture, benign and capable of normalizing the chances and quality of life on a long term basis.

Aged↗
PubMedDate not supplied

Limy bile and laparoscopic cholecystectomy.

OBJECTIVE: To determine incidence of 'limy bile' in patients undergoing laparoscopic cholecystectomy; to analyze patient characteristics and preoperative imaging modalities in these patients and evaluate surgical treatment. PATIENTS AND METHODS: A retrospective analysis of 1800 laparoscopic cholecystectomies performed between March 1990 and March 1998 for symptomatic gallbladder disease. RESULTS: Five patients with limy bile (0.27%) were identified. Four were female and one was male, age varied from 42 to 66. Most patients were symptomatic longtime before presentation. Ultrasound was not able to differentiate between normal gallstones or sludge. In three patients the diagnosis was made before operation, in one patient it was an incidental finding. Surgery in these patients is not more difficult than in any other patient. CONCLUSION: Limy bile is a rare finding (0.27% in 1800 cholecystectomies). Plain abdominal X-rays mostly suggest the presence of calcium carbonate precipitate in the gallbladder, but ultrasound cannot differentiate between cholelithiasis and limy bile. Laparoscopic resection can be performed without problems in most patients. Preoperative diagnosis of this rare entity is not essential, as it does not alter treatment.

Adult↗
PubMedDate not supplied

Actinomycosis of the ano-rectum: a rare infectious disease mimicking carcinomatosis.

Abdominal actinomycosis is an infectious disease caused by Actinomyces israeli, a usual germ of the gastro intestinal tract. It gives unusual tumoral lesions with abcesses and fistulas. More rarely is abdominal actinomycosis at the end of the abdominal tube. Cope in 1949 said: "Actinomycosis occurs so seldom in the colon and the rectum that no surgeon, even if he be a proctologist is likely in a life time to see more than a few cases" (4). An anorectal actinomycosis case that looked like rectal cancer is reported. It was treated successfully by surgery and antibiotherapy. Some anatomopathologic and mainly histologic characteristics lead to the diagnosis. General and pathological aspects, symptoms, diagnosis, differential diagnosis and therapy of anorectal actinomycosis are discussed.

Actinomycosis↗
PubMedDate not supplied

[Hamartoma of the breast].

Two cases of hamartoma of the breast are presented. The clinical findings of this benign, rare lesion are not specific. It is characterized radiologically by its typical features of a clear or heterogeneous well defined picture with radiolucent zones on mammography. Echography provides no specific picture. Histologically, the tumor is composed of normal or dysplastic mammary tissue. Surgical treatment is mandatory, an enucleation can usually be performed.

Adult↗
PubMedDate not supplied

[A comparative study of 2 treatment methods for onychocryptosis (ingrown toenail)].

One hundred and fifty-six patients, on whom 200 procedures for ingrowing toenails were performed, were randomly allocated into one or two treatment groups: segmental phenolization and wedge excision. There were 94 segmental phenolizations and 106 wedge excisions. Post-treatment discomfort was assessed on an analytical graph. There was a clear difference between the two groups one week after treatment. Over a mean follow-up period of 12 months a total of 27 nail spikes occurred, 8 in the phenolized group and 16 in the wedge excision group, this being not a significant difference at the five per cent level.

Adolescent↗
PubMedDate not supplied

[Interdigital pilonidal sinus or barber's disease].

A case of barbers disease is presented. The pathogenesis, clinical course and therapy is reviewed. This rare occupational disease must be regarded separate from the postnatal sinus pilonidalis. Therefore the authors suggest a revalorization of the distinguishing name of fistula interdigitalis crinogenita given by G. J. N. Vleugels Schutter in 1963.

Adult↗