necrotic tumor

necrotic tumor

Oncology A tumor with one or more areas of necrosis, often related to tumor growth beyond the reach of the tumor's vascular supply. See Metastasis.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
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The contrast between autoradiographs and H&E staining images showed that the intense signal of autoradiography was mainly localized in necrotic tumor area and the necrotic-to-viable tumor signal ratios were 3.8 and 3.9 for treatment group and control group, respectively, which suggested that [sup.131]I-H33258 could specifically delineate tumor necrosis and the higher overall uptake in the treated tumors was attributed to the increased necrosis.
MRI of the pelvis revealed extensive necrotic tumor extending to the right pelvic sidewall including ischium, ischiorectal fossa, perineum, insertion of corpus cavernosum, scrotal base, and right gluteal area, with involvement of the subcutaneous tissues (Figure 2 and supplementary materials (available here)).
We review a case of undifferentiated uterine sarcoma in a postmenopausal woman that initially presented as Clostridium perfringens sepsis, with the source of sepsis being endometritis in the setting of a large, necrotic tumor.
Caption: Figure 1: Necrotic tumor in the upper pole of the spleen.
[2-4] Larval debridement therapy (LDT) has also been used since 1990 in the United States (US), Israel, United Kingdom (UK), Germany, Sweden, Switzerland, Ukraine, and Thailand for venous stasis ulcers, temporal mastoiditis, Fournier gangrene, necrotic tumor masses, and other soft tissue injuries.
Abdominal infection after pancreatic carcinoma surgery manifests as intraperitoneal abscess, intestinal obstruction and purulent peritonitis under CT.15 Intraperitoneal abscess should be distinguished with pancreatic pseudocyst, congenital mesenteric cyst and necrotic tumor. Even complete abscess wall enhancement and the existence of air signs are distinctive clues to the diagnosis of intraperitoneal abscess by CT.
A local residual tumor after percutaneous therapy is particularly difficult to detect because the margin between viable and necrotic tumor tissue is unclear in most cases.
a, Interface between viable and necrotic tumor is sharp.
One-month after TACE treatment, tumor tissues exhibited extensive necrosis and expression of MTA1 increased dramatically in residual tumor cells which were distributed in the border of necrotic tumor regions and the tissues of tumor periphery (Figures 2(a) and 3(d)).
These phenomena are not known exactly yet, but we can clearly state that necrotic tumor cells consume space inside the tumor, so when tumor measurement is done, we measure the necrotic and proliferating tumor cells as well.
The mechanism of occurrence of spontaneous TLS is hypothesized to be the consequence of necrosis developing in a large tumor as vascular supply is compromised by tumor growth and necrosis of tumor cells progress to tumor lysis from necrotic tumor cell contents being released into circulation [8].