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Biomedical subjects

H J Isaksson

Publications and source records attributed to H J Isaksson.

7 recordsLinked to original sources

Epidemiology of organising pneumonia in Iceland.

BACKGROUND: Cryptogenic organising pneumonia (COP) has also been called idiopathic bronchiolitis obliterans organising pneumonia. In secondary organising pneumonia (SOP) the causes can be identified or it occurs in a characteristic clinical context. The aim of this study was to determine the incidence and epidemiological features of COP and SOP nationwide in Iceland over an extended period. METHODS: A retrospective study of organising pneumonia (OP) in Iceland over 20 years was conducted and the epidemiology and survival were studied. All pathological reports of patients diagnosed with or suspected of having COP or SOP in the period 1984-2003 were identified and the pathology samples were re-evaluated using strict diagnostic criteria. RESULTS: After re-evaluation, 104 patients fulfilled the diagnostic criteria for OP (58 COP and 46 SOP). The mean annual incidence of OP was 1.97/100 000 population (1.10/100 000 for COP and 0.87/100 000 for SOP). The mean age at diagnosis was 67 years with a wide age range. The most common causes of death were lung diseases other than OP, and only one patient died from OP. Patients with OP had a lower rate of survival than the general population, but there was no statistical difference between COP and SOP. CONCLUSIONS: The incidence of OP is higher than previously reported, suggesting that OP needs to be considered as a diagnosis more often than has been done in the past.

Adolescent↗

Gallstone in a hernia sac.

Perforation of the gallbladder with spillage of stones into the abdominal cavity is relatively common during laparoscopic cholecystectomy. We report a patient presenting with a symptomatic groin hernia 10 days after laparoscopic cholecystectomy for acute cholecystitis. The hernia sac was found to contain a gallstone. The patient underwent an uneventful hernia repair. Various complications due to retained gallstones have been described as case reports emphasizing how important it is to prevent perforation of the gallbladder or else make an effort to retrieve spilled stones from the abdomen.

Aged↗

Hypothalamic hamartoma causing precocious puberty treated by surgery: case report.

A 6-year-old girl was treated for precocious puberty secondary to a hypothalamic hamartoma by resection of the tumor. When she was six months old, her parents noticed incipient pubic hair and menses accompanied by breast development. Computed tomography was judged as normal. The girl was treated with monthly gonadotropin-releasing hormone analogue injections until 6 years of age, when magnetic resonance imaging (MRI) demonstrated a pedunculated isodense mass below the tuber cinereum. The hamartoma was totally removed using microsurgery. The symptoms and signs of precocious puberty disappeared after surgery. Follow-up MRI 1 year later showed no remaining tumor.

Child↗

Flow cytometric DNA analysis of adenocarcinomas of the vermiform appendix. Brief report.

The DNA ploidy status and S-phase fraction of eight adenocarcinomas of the vermiform appendix diagnosed in Iceland during 1974-1990 were analyzed by flow cytometry. Four cases were classified as Dukes' stage B2 and four cases as Dukes' stage D. Seven tumors were diploid and one was aneuploid. The DNA aneuploid tumor was the only one which metastasized outside the abdominal cavity. The S-phase fraction in general was low. The results of this study do not indicate any significant correlation between ploidy status and clinical behavior.

Adenocarcinoma↗

Adenocarcinoma of the vermiform appendix. A population study.

We report seven cases of adenocarcinoma of the vermiform appendix occurring in Iceland during 1974-1989. The patients ranged in age from 25-83 years, mean age 55.1 years. There were five males and two females. Five had mucinous adenocarcinoma, two had adenocarcinoma. Four patients presented with symptoms and signs of acute appendicitis and all had surgically resectable disease. Three of these patients were alive with no evidence of disease four months, two years and 15 years after presentation; one death of disease occurred seven years after ileocecal resection. In three cases, the clinical presentation was that of metastatic adenocarcinoma of unknown origin. Of these patients two were diagnosed at autopsy and one after appendectomy for perforated appendicitis. Survival in this group was six weeks, three months and twelve months, respectively. In none of our patients was the diagnosis made preoperatively and no tumors were found in appendices removed incidental to other intra-abdominal operations. The incidence of adenocarcinoma of the vermiform appendix in Iceland during 1974-1989 was approximately 0.2 cases/100.000/year.

Adenocarcinoma↗

Cancer of the pancreas in Iceland. An epidemiologic and clinical study, 1974-85.

A retrospective study was performed of all patients diagnosed as having pancreatic cancer in Iceland during the period 1974-85 (12 years). The incidence of the disease during the period according to this study was 10.7 per 100,000 males and 9.8 per 100,000 females, with age-adjusted world standard incidences of 9.0 per 100,000 males and 6.7 per 100,000 females. A total of 301 patients were identified; adequate information could be obtained for 281 patients, and 225 (74.8%) had the diagnosis histologically confirmed. Two hundred and five patients with adenocarcinoma were accepted for detailed analysis. Of the patients with adenocarcinoma 139 (67.8%) were diagnosed at laparotomy, and 33 of them had the tumour resected, with an operative mortality of 12.1%. The cancer was located in the head of the pancreas in 102 patients (49.8%), and in 159 (77.6%) metastases were found at the time of diagnosis. The median survival time for the patients with adenocarcinoma was 95.4 days (SD +/- 11.1 days), although there were two patients in this group who were alive 5 years after diagnosis. The median survival for the total group of 281 patients was 98.3 days (SD +/- 11.0 days), although 6 of these patients lived for more than 5 years. The percentage of histologically confirmed tumours in Iceland is high compared with many previously reported studies.

Adenocarcinoma↗