P E Jönsson

Helsingborgs Lasarett, Hälsingborg, Skåne, Sweden

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Publications (79)190.23 Total impact

  • No preview · Article · Mar 2010 · EJC Supplements
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    ABSTRACT: The effect of postoperative radiotherapy after sector resection for stage I-II lymph node-negative breast cancer was evaluated in a patient population with access to public mammographical screening. 1187 women were randomised to no further treatment or postoperative radiotherapy following a standardised sector resection and axillary dissection. Radiation was administered to a dose of 48-54 Gy. Median age was 60 years, and median size of the detected tumours was 12 mm. Of the women 65% had their tumours detected by mammographical screening. The relative risk (RR) of ipsilateral breast recurrence was significantly higher in the non-irradiated patients compared with the irradiated patients, RR=3.33 (95% Confidence Interval (CI) 2.13-5.19, P<0.001). The corresponding cumulative incidence at 5 years was 14% versus 4%, respectively. Overall survival (OS) was similar, RR=1.16 (95% CI 0.81-1.65, P=0.41), with 5 year probabilities of 93 and 94%, respectively. Recurrence-free survival (RFS) at 5 years was significantly lower in the non-irradiated women, 77% versus 88% (P<0.001). Although women above 49 years of age, whose tumours were detected with mammographical screening, had the lowest rate of ipsilateral breast recurrence in this study, the cumulative incidence of such event amounted to 10% at 5 years if radiotherapy was not given. Such a recurrence rate has been considered as unacceptably high, but is, however, in the same range as that reported after lumpectomy and postoperative radiotherapy in published series.
    No preview · Article · Aug 2003 · European Journal of Cancer
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    ABSTRACT: Large, prospective, randomized trials with long term follow-up are required to obtain an unbiased evaluation of the significance of resection margins in patients with cutaneous melanoma. The Swedish Melanoma Study Group performed a prospective, randomized, multicenter study of patients with primary melanoma located on trunk or extremities and with a tumor thickness > 0.8 mm and </= 2 mm. Patients were allocated randomly to a 2-cm excision margin or a 5-cm excision margin. In total, 989 patients were recruited during the period 1982-1991. The median follow-up was 11 years (range, 7-17 years) for estimation of survival and 8 years (range, 0-17 years) for evaluation of recurrent disease. The crude rate of local recurrence, defined as a recurrence in the scar or transplant, was < 1% (8 of 989 patients). Twenty percent of the patients (194 of 989 patients) experienced any disease recurrence, and 15% (146 of 989 patients) died of melanoma. There were no statistically significant differences between the two treatment arms. In a multivariate Cox analysis with patients allocated to wide excision as the reference group, the estimated relative hazards for overall survival and recurrence free survival among those allocated to a 2-cm resection margin were 0.96 (95% confidence interval, 0.75-1.24), and 1.02 (95% confidence interval, 0.80-1.30), respectively. In this long term follow-up study, local recurrences were found to be rare among patients with tumors > 0.8 mm thick and </= 2.0 mm thick. No difference in recurrence rate or survival between the two treatment groups was found. Patients in this category can be treated with a resection margin of 2 cm as safely as with a resection margin of 5 cm.
    Full-text · Article · Oct 2000 · Cancer
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    ABSTRACT: The present study was designed to study 5-FU pharmacokinetics after interferon. Weekly bolus 5-FU (500 mg/m2), immediately followed by leucovorin (60 mg/m2) was given in 14 weekly cycles to 55 gastrointestinal and breast cancer patients. Interferon-alpha was given on days 2, 4 and 6, starting from cycle 2 at a dose of 0.5 million units (MU) and stepwise increased to 12 MU in cycles 12 and 13. Five patients could not tolerate the treatment even at the lowest dose of interferon and 22 patients were unavailable for the pharmacokinetic analysis because of dose reductions of 5-FU. Five patients were able to follow the protocol to 12 MU, whereas most patients were unable to continue owing to toxicity. 5-FU pharmacokinetics was analysed every second cycle. Peak concentration and AUC were increased after 12 MU of interferon, but no other significant influence of interferon on pharmacokinetic parameters of 5-FU was observed.
    No preview · Article · Feb 2000 · Acta Oncologica

  • No preview · Article · Aug 1997 · The Breast
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    ABSTRACT: The traditional surgical treatment for primary malignant melanoma has often been a wide excision with a margin of about 5 cm. Since the risk of local recurrences is dependent on tumor thickness, thin tumors (<1 mm) have routinely been excised with a narrow margin. For thick tumors, the optimal resection margin is controversial, and can be determined only by prospective, randomized trials. The Swedish Melanoma Study Group performed a prospective, randomized multicenter study to evaluate an excision margin of 2 versus 5 cm for patients with cutaneous malignant melanoma with tumor thickness > 0.8 and < or = 2.0 mm. The trial includes 769 patients. Patients with melanomas of the skin of the head, neck, hands, feet, or vulva were not included in the trial. In the event of an excision biopsy for diagnosis, radical surgery was completed within 6 weeks. The median follow-up time was 5.8 years for estimation of survival and 4.0 years for diagnosis of recurrent disease. No significant differences have been observed between the treatment groups regarding local or regional recurrences or survival. We recommend an excision with a margin of 2 cm for cutaneous malignant melanoma with a tumor thickness > 0.8 and < or = 2.0 mm.
    No preview · Article · May 1996 · Cancer
  • H Olsson · H Jernström · P Alm · H Kreipe · C Ingvar · P E Jönsson · S Rydén
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    ABSTRACT: The proliferative rate in normal breast epithelium from 58 women undergoing reduction mammoplastics was studied using the formalin resistant antibody Ki-S5, and related to age at operation, menstrual cycle phase, family history of breast cancer, height and weight, parity, and hormonal use. The breast tissue from women operated on in the luteal menstrual cycle phase (day 15–28 among oral contraceptive (OC) users) had significantly higher proliferative rate than breast tissue removed from women in the follicular phase (day 1–14) (p = 0.01). Among women presently exposed to hormones, those with a positive family history of breast cancer among first and second degree relatives had significantly higher values than cases without such history (p = 0.02). Weight was not significantly related to proliferation rate, while a short height was associated with a significantly higher proliferation rate (p = 0.04). Women who used OCs before the first full-term pregnancy (FFTP) had a significantly higher proliferation rate compared with never users or late users (p = 0.04). No significant difference was seen between parous versus nulliparous women. The results from the univariate analysis persisted in multivariate models. An especially high proliferation rate was seen in young women with both a positive family history and present hormonal use (p = 0.001). Overall, it was found that young women had a non-significantly higher proliferation rate than older women (p = 0.10). Due to small sample size, these results must be regarded as preliminary, especially in the subgroup analyses.
    No preview · Article · Feb 1996 · Breast Cancer Research and Treatment
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    ABSTRACT: Regional therapy for colorectal liver metastases aimed at prolonging survival has not been tested fully in a randomized trial with untreated control subjects. This study explored the efficacy of temporary hepatic artery occlusion followed by intraportal infusion of 5-fluorouracil (5-FU) and oral allopurinol as biochemical modulators in prolonging the survival of patients with nonresectable liver metastases and no extrahepatic cancer. Eighty-four patients were considered for randomization, of whom 24 were excluded at laparotomy because of extrahepatic cancer (n = 17) or resectable lesions (n = 5). In two patients, no cancer was identified in the liver. Thirty-two patients were allocated to receive treatment, and 28 were allocated to receive no regional or systemic treatment. Six patients were excluded after randomization because of major protocol violations. The median survival time for patients was 17 months (range, 0-66), and for control subjects, the median was 8 months (range, 0-31). Log rank analysis demonstrated a significant survival benefit for treatment versus no treatment (P = 0.0039). (In two patients, early death was due to toxicity from the wrong dose of 5-FU and the wrong route of administration, respectively; the mean and median survival were reduced by 1 month). This study identified a treatment modality that prolongs survival in patients with nonresectable liver metastases and no extrahepatic metastases from colorectal cancer, suggesting that control subjects receiving no therapy may not be necessary in future randomized trials.
    Full-text · Article · Dec 1994 · Cancer
  • C Ingvar · K Norrgren · S E Strand · P E Jönsson
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    ABSTRACT: Iodinated monoclonal antibody 96.5 was injected intravenously in the nude rat model transplanted with human melanoma. The activity distribution was evaluated by: 1) direct application of dissected tissue on autoradiographic film, 2) autoradiography of whole-body sections, and 3) beta-camera imaging of fresh frozen tissue. Method (1) is non-quantitative and has a poor resolution. It can only be recommended for simple screening. The whole-body method (2), although complicated, gives more accurate digital information of tissue uptake in individual pixels, or in larger regions of interest (ROIs). The beta camera technique (3) is a rapid method but its accuracy is less than the whole-body method. All three methods showed that the activity distribution in the tumours was more heterogenous than in other tissues. An overlap of activity uptake in tumours and other tissues was often seen. Mean uptake ratios in the whole body autoradiograms correlated well with in vivo uptake ratios from measurements in dissected tissues. At present, whole body autoradiography appears to be the method of choice for imaging the uptake of radiolabelled monoclonal antibodies in experimental animals.
    No preview · Article · Jan 1994 · Anticancer research
  • B Jakobsson · G Roos · I A el Hag · P E Jönsson · U Stenram
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    ABSTRACT: A therapeutic dose of labelled 5-fluorouracil (5-FU) was infused via the hepatic artery during 30 min with or without ligation of the left portal venous branch in Wistar rats with a secondary liver cancer in the left lateral lobe. After another 60 min, the incorporation of 5-FU into the acid soluble fraction (ASF), ribonucleic acid (RNA) and deoxyribonucleic acid (DNA), was determined in tumor, ligated and unligated liver lobes, small intestine, kidney, and bone marrow. The liver nucleotide profile was examined with isotachophoresis. Portal venous branch ligation (PVBL) caused the following changes, compared with the unligated control group: in the tumor, the incorporation of 5-FU into RNA and DNA decreased and the ratio RNA/acid-soluble fraction labelling decreased. The incorporation increased in intestinal and bone marrow RNA. It was unchanged in liver and kidney. The ratio of tumor to peripheral normal-tissue (small intestine, bone marrow, and kidney) labelling of RNA and DNA decreased. Liver nucleotides (F)UTP, (F)UDP-glucuronic acid, (F)UDP-N-acetylhexosamine, and NAD were lower in the ligated than in the unligated liver lobe. ATP and energy charge did not decrease significantly. In conclusion, PVBL in conjunction with hepatic arterial administration of 5-FU increased systemic drug exposure and possibly decreased hepatic tumor anabolism. It has not been examined how this interferes with the therapeutic effect.
    No preview · Article · Feb 1992 · Research in Experimental Medicine
  • J Westerdahl · H Olsson · C Ingvar · L Brandt · P E Jönsson · T Möller
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    ABSTRACT: Southern travelling habits were recorded for 127 melanoma patients from southern parts of Sweden (the 56th latitude), 55 thyroid cancer patients, 100 non-Hodgkin's patients and 794 healthy controls from the same region. Melanoma patients were found to travel significantly more often south of the 45th latitude, as compared with patients with non-Hodgkin's lymphoma or thyroid carcinoma (RR = 2.2 for a difference of + 10 trips), and with the healthy controls (RR = 1.4 for a difference of + 10 trips). Considering men and women separately, the difference was significant only for men. Patients with melanoma had a higher educational level than the tumour controls and the healthy controls (p < 0.001 and p < 0.001 respectively). There was a significant correlation between high travelling frequency and high education. An increased risk related to southern travelling was present for patients with melanoma on the extremities and head and neck, as well as for patients with truncal melanoma. These findings support the concept that acute exposure to sunburn may be a risk factor for malignant melanoma.
    No preview · Article · Jan 1992 · Anticancer research
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    ABSTRACT: A prospective randomized trial testing regional hyperthermic perfusion with melphalan has been conducted. Sixty-nine patients with recurrent malignant melanoma of the extremities were randomly allocated to surgery (36 patients) or surgery plus regional perfusion (33 patients). Prognostic variables concerning primary tumor as well as the recurrent disease were evenly distributed in the groups, excluding any bias in the randomization. Median tumor-free survival after randomization was 17 months in the perfusion group and 10 months in the control group. There were 15 locoregional recurrences in the perfusion group and 24 in the control group. The tumor-free survival curve was significantly (P = .044) better for the perfusion group than for the control group. Median survival time after randomization was 57 months in the perfusion group and 35 months in the control group. This difference was not significant. One patient died within 1 month after perfusion of pulmonary embolism. Regional hyperthermic perfusion after surgery of recurrent malignant melanoma should only be recommended in prospective and controlled trials, until its value has been proven in several randomized studies.
    No preview · Article · Jan 1992 · Journal of Clinical Oncology
  • H Beitner · S Jacobsson · P E Jönsson · B Lagerlöf

    No preview · Article · Nov 1991 · Lakartidningen
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    C Ingvar · K Norrgren · S E Strand · T Brodin · P E Jönsson · H O Sjögren
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    ABSTRACT: Nude rats were heterotransplanted with human melanoma metastases on both thighs. Ten days later a bolus of 125I-labelled monoclonal antibody (MAb) 96.5 was injected through a catheter in the common femoral artery. The femoral vein was clamped for 15 min to obstruct the venous outflow from the injected leg. The specific tissue uptake (%/g) in the tumour on the injected side compared to the non-injected side showed initially higher uptake (ratio 7.2 at 3 h). After 24 h there were no side differences. The tumour to muscle ratio was 2.8 at 3 h when injected and control sides were compared. Intravenous or subcutaneous injection gave similar specific tissue uptake as regional arterial injection after 24 h. Tissue to plasma ratios were similar after intravenous and subcutaneous injection of monoclonal antibodies. Intraarterial injection of a bolus of labelled monoclonal antibodies and obstructing the venous outflow thus increased the tumour uptake during a short period of time during which the contrast enhancement was three-fold.
    Full-text · Article · Feb 1991 · Acta Oncologica
  • P E Jönsson · M Malmberg · M Ericsson · S Ryden
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    ABSTRACT: Weekly dose Adriamycin was given prospectively as first line chemotherapy in a phase II study including 76 patients with evaluable advanced breast cancer. The response rate (CR+PR) was 24 percent (18/76) and a further 41 per cent (31/76) of the patients achieved stable disease (NC). Mean time to progression for responders was 17 months and for those with stabilized disease 10 months. Mean time to progression for all patients was 8.8 months and overall mean survival time 16 months (2-55+). Side effects were well tolerable; myelosuppression was registered in 27 percent and alopecia requiring a wig in 24 percent. In three patients cardiotoxicity was registered after 1,190 mg, 1,480 mg and 1,780 mg respectively. This low dose regimen seems effective and well comparable regarding time to progression with multidrug regimens, including doxorubicin.
    No preview · Article · Jan 1991 · Anticancer research
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    ABSTRACT: Thirty-five (34 evaluable) consecutive postmenopausal women with estrogen receptor positive (greater than or equal to 10 fmol/mg) or unknown advanced breast cancer were treated with high dose toremifene in a phase II study. All patients had progressed during prior adjuvant or palliativ antiestrogen treatment. The dose of toremifene was 240 mg per day. No complete or partial responders were registered. Nine patients (26%) were considered to have stable disease (NC). The time to progression for these patients was 5-27+ months with a mean time of twelve months and median time of eight months. Two patients are still on treatment after twelve and 24 months respectively. There seems to be a relationship with receptor value; however, there are two few patients for a safe statistical analysis. The side effects were insignificant. The conclusion is that the efficiency of toremifene as second line hormonal treatment is restricted, although it may be one additional choice.
    No preview · Article · Jan 1991 · Anticancer research
  • I A el Hag · B Jakobsson · P E Jönsson · U Stenram
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    ABSTRACT: A therapeutic dose of labelled 5-fluorouracil (5-FU) was infused via the hepatic artery during 30 min with or without a simultaneous temporary clamping of the portal vein in a model of secondary liver cancer in Wistar rats. After another 60 min, the incorporation of 5-FU into the acid soluble fraction, RNA and DNA was determined in tumor, liver, small intestine, kidney, and bone marrow. The liver and intestinal nucleotide profiles were examined with isotachophoresis. Temporary portal vein clamping caused the following changes, as compared with the control group with intraarterial infusion only: in the liver, the incorporation of 5-FU into the acid soluble fraction increased without a concomitant increase into the RNA or of the level of (F)UTP. Liver ATP decreased. In the tumor, the ratio of RNA to acid soluble fraction labelling decreased. There was a generally decreased ratio of tumor to peripheral normal tissue (small intestine and kidney) labelling. In conclusion, portal vein clamping in conjunction with hepatic arterial administration of 5-FU led to a decreased anabolism of 5-FU in the liver and tumor, and increased systemic drug exposure. It is not known how this interferes with the therapeutic effect.
    No preview · Article · Feb 1990 · Research in Experimental Medicine
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    C Ingvar · K Norrgren · S E Strand · T Brodin · P E Jönsson · H O Sjögren
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    ABSTRACT: Nude rats heterotransplanted with human melanoma metastasis were injected subcutaneously on the hind paw with 125I-labelled monoclonal antibody 96.5 and with control antibody 131I-OKT3. The elimination from the injection site followed a biexponential function. The uptake in the inguinal lymph nodes on the side of the injection was initially high, but after 90 h it equalled the control side. The uptake in the tumour was slower than after i.v. injection but higher than in other tissues except blood. More than 80% of the activity in the dissected liver represented circulating blood. The uptake ratio of 96.5/OKT3 was c.3 in the tumours but c. 1 in all other tissues including blood. The capillary filtration coefficient was proportional to the uptake in organs like liver, lungs and muscle. It is concluded that subcutaneously injected radiolabelled monoclonal antibodies are initially transported via the lymph but then mainly distributed via the blood reaching the different tissues including tumours.
    Full-text · Article · Feb 1990 · Acta Oncologica
  • I A el Hag · G Roos · P E Jönsson · U Stenram
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    ABSTRACT: Rats were inoculated subcutaneously into both flanks with a transplantable adenocarcinoma of the colon. They were treated intravenously with either 5-FUrd (5-fluorouridine) or 5-FdUrd (5-fluoro-2'-deoxyuridine) with or without addition of dipyridamole 20 and 30 min later, respectively, for 3 consecutive days. Dipyridamole improved the antitumor activity of 5-FUrd but decreased that of 5-FdUrd.
    No preview · Article · Jan 1990 · Anticancer research
  • C Ingvar · B Jakobsson · T Brodin · P E Jönsson · S E Strand
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    ABSTRACT: Fifty-eight metastases of malignant melanoma in 27 consecutive patients were evaluated by immunohistochemistry using monoclonal antibodies (MAb) 96.5, 48.7 and 4.2, all with a high specificity for melanoma tumour associated antigens. MAb OKT3 directed to human T-lymphocytes was used as control and normal mouse serum as background. Different degrees and patterns of staining were recorded using a scale of 0 to 4. 85% of the metastases were positive (score greater than +2) to 96.5 or 48.7 and 78% to antibody 4.2. All metastases were positive for at least one of the three antibodies, 93% for two, and 59% for all three antibodies. No substantial heterogeneity (more than +1 difference) was found in two sections approximately 5 mm apart within the same metastasis (one out of 39 metastases). In 15 patients in whom more than one tumour was examined, heterogeneity between individual metastases was found in one patient for antibody 96.5, three for 48.7 and none for 4.2. The existence of immunological heterogeneity in melanoma metastases must be taken into account when designing techniques for radioimmunoimaging and radioimmunotherapy.
    No preview · Article · Jan 1990 · Anticancer research

Publication Stats

2k Citations
190.23 Total Impact Points


  • 1986-2010
    • Helsingborgs Lasarett
      Hälsingborg, Skåne, Sweden
  • 1979-1994
    • Lund University
      • • Department of Surgery
      • • Department of Radiation Physics
      • • Department of Diagnostic Radiology
      Lund, Skåne, Sweden
  • 1992
    • Sahlgrenska University Hospital
      Goeteborg, Västra Götaland, Sweden