Release date: 2015-08-28
Minimally invasive medicine is a new method combining medical imaging-oriented and minimally invasive puncture-based treatment and diagnosis. With the guidance of medical imaging, our positioning and treatment are more precise, so it has less trauma and pain. , the effect is exact and so on. Let's take a look at the application of minimally invasive medicine in the field of cancer.
I. Intra-arterial drug perfusion
The drug is perfused through the catheter to the tumor feeding artery, so that the local drug concentration of the tumor is significantly increased, and the systemic drug concentration is low, which improves the efficacy and reduces the side effects.
Scope of application:
1) Infusion chemotherapy: preoperative and postoperative chemotherapy for malignant tumors and advanced palliative chemotherapy
2) perfusion of vasoconstrictors for the treatment of bleeding disorders
3) perfusion of vasodilators, thrombolytics, etc. for the treatment of ischemic diseases
4) Infusion of antibiotics for the treatment of refractory infectious diseases
Second, vascular embolization
Vascular embolism, as its name implies, is to use various embolization materials to block blood supply through transcatheter diseased blood vessel embolization, thereby causing ischemic necrosis of diseased tissues or organs to achieve therapeutic purposes.
Scope of application:
1) Preoperative and palliative treatment of various solid tumors
2) Internal organ resection such as spleen, thyroid, and renal embolism
3) Arteriovenous malformation, embolization of arteriovenous fistula
4) refractory major bleeding such as massive hemoptysis, digestive tract and urinary, reproductive system bleeding
Third, high intensity focused ultrasound (HIFU) - non-invasive treatment
Don't think that ultrasound can only be used for diagnosis. If you want to understand this technology, let's recall your childhood.
(Remember that the magnifying glass focuses on getting fire?)
HIFU uses ultrasonic waves as the energy source. By using its penetrability and focusability, the low-energy ultrasound in vitro is focused on the in vivo lesions, and instantaneous high temperature is generated at the focus to achieve the purpose of killing the tumor tissue.
Scope of application:
Pancreatic cancer, uterine fibroids, retroperitoneum, abdominal cavity, pelvic solid tumor, liver tumor (left liver), benign prostatic hyperplasia and prostate cancer (inoperable); the treatment and analgesic advantages of retroperitoneal lymph node metastasis are obvious.
Fourth, radiofrequency, microwave tumor ablation treatment
The local tissue temperature is 65-100 ° C by alternating RF current or microwave, thereby necrosis of the tumor tissue and achieving therapeutic effect.
Scope of application:
1, the tumor can not be removed
2, the tumor diameter is less than 7 cm
3, less than 8 lesions
4, the total volume of the lesion is less than 20% of the total liver volume
5. Any extrahepatic lesions are confined to nodules (6 or less, 3CM or less)
Five, argon-helium cryotherapy
The ice hockey is formed in the cells by rapid cooling of argon gas, and after 10-15 minutes, the temperature is raised by helium gas, and the tumor cells are ruptured by the principle of thermal expansion and contraction, thereby achieving a therapeutic effect.
(male, 69 years old, right lung squamous cell carcinoma)
Scope of application:
Liver cancer, pancreatic cancer, rectal anal canal cancer, lung cancer, kidney cancer, bladder cancer, prostate cancer, uterine cancer, uterine fibroids, ovarian cancer, meningioma, glioma, neurofibroma, chordoma, bone or spine Good, malignant, breast, breast fibroids, skin cancer, nasopharyngeal cancer, thyroid cancer and cancer pain.
Sixth, 125I radioactive seed implantation
The 125I radioactive particles are directly implanted into the tumor body, and the sustained release of low-energy γ-rays can achieve the purpose of killing the tumor cells. Since the tissue penetration distance is 1.7 cm, the influence on the surrounding normal tissues is small, and the purpose of accurate radiotherapy is achieved. .
Scope of application:
Unresectable primary or secondary venous local advanced solid tumor
The largest diameter of the tumor is ≤10cm
Malignant tumors resistant to external radiotherapy
Malignant tumor with strong recovery of sublethal radiation damage
Malignant tumor with high degree of differentiation and slow growth
In the face of so many minimally invasive treatments for tumors, in clinical application, it is necessary to formulate the optimal treatment plan according to the individual differences of patients, the technical level of hospital equipment and medical personnel. This maximizes patient benefit with minimal trauma.
Source: Medical Cancer Channel
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