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Pure choriocarcinoma of the testis represents the most aggressive pathologic variant of germ cell tumors in adults, characteristically with early hematogenous and lymphatic metastatic spread. Because of early spread and inherent resistance to anticancer drugs, patients have poor prognosis.
The survival rate following treatment with chemotherapy is approximately at least 90%. [4] If gestational choriocarcinoma has spread to the liver in an individual, survival rate may be lower. [7] Overall survival rate is also higher when management of gestational choriocarcinoma occurs in a setting with physicians familiar with the condition.
Bone metastasis, or osseous metastatic disease, is a category of cancer metastases that result from primary tumor invasions into bones. Bone-originating primary tumors such as osteosarcoma , chondrosarcoma , and Ewing sarcoma are rare; the most common bone tumor is a metastasis. [ 1 ]
General treatment regimens have not changed much in the past 30 years, in part due to the lack of randomized clinical trials. [4] Surgery is the treatment of choice if the tumor is determined to be resectable. Curettage is a commonly used technique. [12] The situation is complicated in a patient with a pathological fracture.
Age, bone type, drug therapy and pre-existing bone pathology are factors that affect healing. The role of bone healing is to produce new bone without a scar as seen in other tissues which would be a structural weakness or deformity. [2] The process of the entire regeneration of the bone can depend on the angle of dislocation or fracture.
A major use of systemic radioisotope therapy is in the treatment of bone metastasis from cancer. The radioisotopes travel selectively to areas of damaged bone, and spare normal undamaged bone. Isotopes commonly used in the treatment of bone metastasis are radium-223, [113] strontium-89 and samarium (153 Sm) lexidronam. [114]
Metastasis is a key element in cancer staging systems such as the TNM staging system, where it represents the "M". In overall stage grouping, metastasis places a cancer in Stage IV. The possibilities of curative treatment are greatly reduced, or often entirely removed when a cancer has metastasized.
Montignac diet: A weight-loss diet characterised by consuming carbohydrates with a low glycemic index. [167] Mushroom diet: A mushroom-predominant diet. Negative calorie diet: A claim by many weight-loss diets that some foods take more calories to digest than they provide, such as celery. The basis for this claim is disputed.