Electrochemotherapy provides highly effective local treatment for a variety of tumors. In deep-seated tumors of the head and neck, due to complex anatomy of the region or inability to cover the whole ...tumor with standard electrodes, the use of long single needle electrodes is mandatory. In such cases, a treatment plan provides the information on the optimal configuration of the electrodes to adequately cover the tumor with electric field, while the accurate placement of the electrodes in the surgical room in patients can remain a problem. Therefore, during electrochemotherapy of two head and neck lymph-node metastases of squamous cell carcinoma origin, a navigation system for placement of electrodes was used.
Electrochemotherapy of two lymph-node metastases of cutaneous squamous cell carcinoma, one in the left parotid gland and the other in the neck just behind the left mandibular angle, was performed using intravenous administration of bleomycin and long single needle electrodes. The tumors were treated according to the prepared treatment plan, and executed with the use of navigation system.
Coupling of treatment plan with the navigation system aided to an accurate placement of the electrodes. The navigation system helped the surgeon to identify the exact location of the tumors, and helped with the positioning of the long needle electrodes during their insertion, according to treatment plan. Five electrodes were inserted for each metastasis, one centrally in the tumor and four in the periphery of the tumor. Five weeks after electrochemotherapy, computed tomography images demonstrated partial response of the first metastasis and complete response of the second one. Six weeks after electrochemotherapy, fine-needle aspiration biopsy specimen obtained from the treated lesions revealed necrosis and inflammatory cells, without any viable tumor cells.
We describe a new technological approach for electrochemotherapy of deep-seated head and neck tumors, coupling of the treatment planning with navigation system for accurate placement of the single long needle electrodes into and around the tumors, according to the treatment plan. Evidence of its effectiveness on two lymph-node metastases of cutaneous squamous cell carcinoma origin in neck lymph is provided.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Electrochemotherapy is a local treatment for skin tumors and also deep seated tumors and metastases. Electrochemotherapy is based on enhanced cytotoxic effectiveness of bleomycin or cisplatin by ...electroporation, which increases drug delivery into cells in tumors. Electrochemotherapy is an ablative technique of high effectiveness with over 80% objective responses of electrochemotherapy treated tumors. Its advantage is the simplicity of the procedure that can be utilized in treatment of different tumor histiotypes. Currently it is predominantly used in palliative intent when the other treatment options have been exhausted. For the translation of electrochemotherapy into the clinics also the technological development that is now focusing into the treatment of deep-seated tumors was important. In Slovenia we are at the forefront in the treatment of liver tumors and head and neck tumors, while the others are developing electrochemotherapy for treatment of bone and brain metastases as well as endoluminal tumors.
Electrochemotherapy is a local treatment for skin tumors and also deep seated tumors and metastases. Electrochemotherapy is based on enhanced cytotoxic effectiveness of bleomycin or cisplatin by ...electroporation, which increases drug delivery into cells in tumors. Electrochemotherapy is an ablative technique of high effectiveness with over 80% objective responses of electrochemotherapy treated tumors. Its advantage is the simplicity of the procedure that can be utilized in treatment of different tumor histiotypes. Currently it is predominantly used in palliative intent when the other treatment options have been exhausted. For the translation of electrochemotherapy into the clinics also the technological development that is now focusing into the treatment of deep-seated tumors was important. In Slovenia we are at the forefront in the treatment of liver tumors and head and neck tumors, while the others are developing electrochemotherapy for treatment of bone and brain metastases as well as endoluminal tumors.
Electrochemotherapy is a local treatment for skin tumors and also deep seated tumors and metastases. Electrochemotherapy is based on enhanced cytotoxic effectiveness of bleomycin or cisplatin by ...electroporation, which increases drug delivery into cells in tumors. Electrochemotherapy is an ablative technique of high effectiveness with over 80% objective responses of electrochemotherapy treated tumors. Its advantage is the simplicity of the procedure that can be utilized in treatment of different tumor histiotypes. Currently it is predominantly used in palliative intent when the other treatment options have been exhausted. For the translation of electrochemotherapy into the clinics also the technological development that is now focusing into the treatment of deep-seated tumors was important. In Slovenia we are at the forefront in the treatment of liver tumors and head and neck tumors, while the others are developing electrochemotherapy for treatment of bone and brain metastases as well as endoluminal tumors.
PDF
