Gastrointestinal stromal tumors: A multidisciplinary challenge

Figure 1 Localized gastrointestinal stromal tumors on computed tomography scan. A: Gastric; B: Duodenal; C: Ileal; D: Jejunal. A and B show respectively a gastric tumor and a duodenal tumor of exophytic growth with well-defined borders. Appreciate in C the different densities inside the tumor due to due to necrosis, haemorrhage, or degenerative components. D shows a jejunal GIST in left iliac fossa.

Figure 2 Metastatic gastrointestinal stromal tumors on computed tomography scan. A: Liver metastasis; B: Peritoneal metastasis “Gistosis”. In A, it is appreciated a large hepatic metastasis in segment IV. B shows the CT of a patient with disseminated peritoneal disease “GISTosis”.

Figure 3 Rectal gastrointestinal stromal tumor on magnetic resonance.

Figure 4 Characteristic endoscopic image of gastric gastrointestinal stromal tumor.

Figure 5 Endoscopic ultrasonography images of gastrointestinal stromal tumors.

Figure 6 Gastrointestinal stromal tumors on positron emission tomography with fluorodeoxyglucose. A: Giant gastric GIST on a patient with neurofibromatosis type 1; B: Gastric GIST with an unique liver metastasis. GIST: Gastrointestinal stromal tumor.

Figure 7 Histological sections of ileal gastrointestinal stromal tumor. A: HE stain; B: Immunohistochemistry with C-KIT.

Figure 8 Management algorithm of gastrointestinal stromal tumors. GIST: Gastrointestinal stromal tumor.