Junzu Geng

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BACKGROUND Mutations in the epidermal growth factor receptor gene (EGFR) are found in around half of Asian patients with non-small cell lung cancer (NSCLC). For this reason, EGFR tyrosine kinase inhibitors (TKI) are often prescribed depending on the EGFR status. Two common EGFR mutations, a deletion in exon 19 and L858R in exon 21, demonstrate a positive(More)
Aggressive angiomyxoma is an uncommon mesenchymal myxoid tumor that is characterized by slow growth and frequent local recurrence. It is currently regarded as a nonmetastasizing tumor. We describe a case of recurrent aggressive angiomyxoma with invasion into the veins including the inferior vena cava and the right atrium and with pulmonary metastases. Our(More)
A primary clear cell adenocarcinoma of the colon is a rare oncologic entity. The current study presents a case of such a tumor in the transverse colon of a 26-year-old male, and describes the computed tomography features of the neoplasm. The tumor appeared as an extensive extracolic mass, which displaced the loop of the small bowel and pancreas, and invaded(More)
Multiple mesenteric well-differentiated (WD) liposarcoma is an extremely rare entity. The present study describes a case of multiple mesenteric WD liposarcoma, complicated by purulent inflammation, in a 59-year-old male who presented with abdominal pain and pyrexia of unknown origin. A computed tomography scan of the abdomen revealed a large,(More)
RATIONALE Abdominal cocoon and peritoneal loose body are both rare abdominal diseases. PATIENT CONCERNS The patient reported in this case was a 47-year-old man who suffered from abdominal pain and distension for 3 days. DIAGNOSIS X-ray, computed tomography, and magnetic resonance imaging revealed multiple peritoneal loose body and small bowel(More)
Angiomyofibroblastoma (AMFB) is a rare, benign, mesenchymal tumor that occurs mainly in the female lower genital tract. We report on a large posterior paravaginal AMFB that presented as a buttock mass, describing the magnetic resonance imaging (MRI) features of the disease. The tumor displays heterogeneous signal intensity on T2-weighted MRI and fast and(More)
Primary perivascular epithelioid cell tumors (PEComas) of the mesentery are rare; therefore, the clinical and imaging features of the tumor have yet to be adequately investigated. The present study reports the case of a 48-year-old female patient histologically diagnosed with a PEComa arising in the mesentery of the small bowel. Abdominal plain computed(More)
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