| 1. |
- Landström, Fredrik, 1966-, et al.
(författare)
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Electrochemotherapy - possible benefits and limitations to its use in the head and neck region
- 2015
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Ingår i: Acta Oto-Laryngologica. - : Informa Healthcare. - 0001-6489 .- 1651-2251. ; 135:1, s. 90-95
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Tidskriftsartikel (refereegranskat)abstract
- Conclusion: Electrochemotherapy (ECT) is an efficacious treatment. It should, however, be used with some caution in the treatment of head and neck cancer.Objectives: To assess local tumor control, safety, survival, and functional outcome after treatment of cancer in the head and neck region with ECT.Methods: Four patients with primary T2 cancer of the oral cavity or oropharynx and one patient with a metastasis of renal cancer in the masseter muscle were treated with ECT with intratumorally administered bleomycin. Control biopsies were carried out 2 months after treatment. Postoperative radiotherapy was performed based on tumor T-stage and the depth of tumor infiltration. Serious adverse events and treatment malfunctions were recorded. The follow-up time was 24 months for the surviving patients and 20 months overall. The PSS-HN scale was used to assess the functional outcome.Results: No local recurrence was recorded in any patient during the follow-up. However, only one patient was treated with ECT alone. There were four serious adverse events: one nearly lethal bleeding, two cases of osteoradionecrosis, and a fistula. One patient died from distant metastasis. The other patients were tumor-free both locally and overall at 24 months. The median functional outcome in all parameters was worse 1 year after treatment.
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| 2. |
- Landström, Fredrik J., 1966-, et al.
(författare)
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Electroporation therapy for T1 and T2 oral tongue cancer
- 2011
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Ingår i: Acta Oto-Laryngologica. - : Informa Healthcare. - 0001-6489 .- 1651-2251. ; 131:6, s. 660-664
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Tidskriftsartikel (refereegranskat)abstract
- Conclusion: Electroporation therapy appears to be a safe treatment achieving excellent local tumor control and very good functional results in our study and it should be further clinically evaluated.Objectives: The objectives of this study were to assess local tumor control, survival, and effects on speech and eating after treatment of tongue cancer with electroporation therapy, a new local therapeutic modality. In this approach intracellular accumulation of a chemotherapeutic agent is achieved by using a locally applied electrical field.Methods: Fifteen patients with primary T1 and T2 oral tongue cancer were treated with electroporation therapy with intratumorally administered bleomycin. Postoperative radiotherapy was performed when the tumor infiltration was 5 mm or more. The follow-up time was 24 months for the surviving patients and 20.4 months overall. The effects on eating and speech were assessed using the PSS-HN scale and voice recordings.Results: No local recurrence was recorded in any patient during the follow-up. Three patients died, two from progressive regional disease. Of the 12 surviving patients, 2 patients had regional recurrence and 10 patients including the 5 patients treated with EPT alone were tumor-free both locally and regionally at the last follow-up. The functional outcome for speech and eating were very good.
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| 3. |
- Landström, Fredrik J, et al.
(författare)
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Electroporation therapy of skin cancer in the head and neck area.
- 2010
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Ingår i: Dermatologic Surgery. - : Ovid Technologies (Wolters Kluwer Health). - 1076-0512 .- 1524-4725. ; 36:8, s. 1245-50
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Electroporation therapy is a new cancer treatment modality in which a locally applied electrical field enhances cell membrane permeability, allowing greater intracellular accumulation of a chemotherapeutic agent.OBJECTIVE: To evaluate the efficacy of electroporation therapy in treating basal cell and squamous cell carcinomas of the skin.MATERIALS AND METHODS: Six patients with skin cancer of the head and neck were treated using electroporation therapy with intratumorally injected bleomycin. Orbital growth, facial nerve proximity, or proximity to cartilage of the external meatus complicated four of these tumors. The intention was curative. The follow-up period was 24 months and included biopsies after 8 weeks.RESULTS: In four of the six patients, one treatment was enough to eradicate the tumor. In one patient, the tumor persisted even after a second treatment with electroporation therapy. A septal cartilage perforation was the only major complication. The cosmetic results were very satisfactory. One additional recurrence was recorded 6 months after the follow-up periodCONCLUSION: Electroporation therapy is a promising new cancer treatment that should be further evaluated as an alternative to surgery, especially in complicated skin cancer.
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| 5. |
- Landström, Fredrik, 1966-, et al.
(författare)
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Long-term follow-up in patients treated with curative electrochemotherapy for cancer in the oral cavity and oropharynx
- 2015
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Ingår i: Acta Oto-Laryngologica. - : Informa UK Limited. - 0001-6489 .- 1651-2251. ; 135:10, s. 1070-1078
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Tidskriftsartikel (refereegranskat)abstract
- Conclusion: ECT can be a safe curative mono modality treatment, especially in tongue cancer. The future role for ECT in head and neck cancer needs to be further investigated.Introduction: Electrochemotherapy (ECT) is a cancer treatment modality that uses electroporation to increase the intracellular accumulation of hydrophilic chemotherapeutic drugs, especially bleomycin.Objectives: To report the 5-year local tumor control, safety of treatment and survival after ECT, and the 1-year quality-of-life (QoL) data.Materials and methods: Nineteen patients with primary head and neck cancer were included and treated with ECT with curative intent. All except one patient had squamous cell carcinoma (SCC). Radiotherapy (RT) was performed in all patients with SCC and tumor infiltration ‡5 mm. The EORTC H&N 35 questionnaire was used at baseline and 12 months after treatment. The Wilcoxon signed rank test and McNemar’s test were used for paired data and Mann Whitney U-test and Fishers exact test were used for independent data (sub-group comparison).Results: There were no local recurrences in the follow-up period. Thirteen patients were treated with adjuvant RT. The six patients that were treated with ECT alone were tumor-free and alive 5 years after treatment. There was one serious adverse event reported; aspiration after treatment of a tongue base tumor. The tumor-specific 5-year survival was 75%. The QoL outcome 1 year after ECT showed a significant increase in problems with senses (taste, smell), speech, mouth opening and xerostomia. The QoL outcome also showed worse outcome in the smoking patients regarding speech, in the patients receiving adjuvant RT regarding mouth dryness and swallowing and in the patients with non-tongue oral cavity cancer regarding need for painkillers.
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