spontaneous tumor

spontaneous tumor

Oncology A neoplasm that arises in a control animal/person that is not exposed to a known carcinogen or tumor-promoting factor–eg, ionizing radiation, HPV
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Figuring out how to trigger a spontaneous tumor regression is kind of the Holy Grail in alternative cancer care.
Spontaneous tumor necrosis at initial biopsy was of borderline significance (Figure 2, B).
Prognostic Impact of Spontaneous Tumor Rupturein Patients With Hepatocellular Carcinoma: An Analysisof 1160 Cases From a Nationwide Survey.
Spontaneous tumor rupture or during excision denotes a high risk independent of any other prognostic factor.
Female mice bearing a spontaneous tumor about 10 mm in diameter were anaesthetized with an intra-peritoneal injection of 40 mg/kg Nembutal.
Indolent clinical course and spontaneous tumor regression may occur in the two forms of infantile myofibromatosis without visceral involvement.
To overcome the limitations associated with the experimental brain metastasis model, several laboratories have adopted the use of spontaneous tumor models.
As a result, these animals are characterized by spontaneous tumor development.
Another risk caused by tumor enlarge- ment was spontaneous tumor rupture.
4,9) One recently published case describes spontaneous tumor regression, with significant size reduction during a period of 10 years.
In other cases, the rodent species and strains currently used in NTP chronic bioassays (F344/N rat and B6C3F1/N mouse) are suspected to be poor models because they either do not develop a specific type of tumor or have a high spontaneous tumor incidence.
Spontaneous tumor regression in a patient with metastatic gastric cancer.

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