Primary Tumor Location Is a Predictor of Poor Prognosis in Patients with Locally Advanced Esophagogastric Cancer Treated with Perioperative Chemotherapy.

Background: Esophagogastric cancer (EGC) is a leading neoplasm worldwide. Perioperative chemotherapy (periCT) is currently a standard of care for most patients (pts). Prevalence of esophagogastric junction (EGJ) tumors is increasing over the last years.

RAS mutations vary between lesions in synchronous primary colorectal cancer: testing only one lesion is not sufficient to guide anti-EGFR treatment decisions.

Introduction: Mutations in KRAS and NRAS genes are negative predictors of anti-EGFR therapies response in metastatic colorectal cancer. There are few reports on RAS testing in synchronous primary colorectal cancer (SP-CRC) and a lack of recommendations on which tissue should be tested for the mutation in this disease. This study analyzed the RAS status of both lesions in SP-CRC patients and in their metastasis.

KRAS gene mutation in a series of unselected colorectal carcinoma patients with prognostic morphological correlations: a pyrosequencing method improved by nested PCR.

Introduction: Inhibition of EGFR is a strategy for treating metastatic colorectal cancer (CRC) patients. KRAS sequencing is mandatory for selecting wild-type tumor patients who might benefit from this treatment. DNA from formalin-fixed paraffin-embedded (FFPE) tissues is commonly used for routine clinical detection of mutations, and its amplification succeeds only when all preanalytical histological processes have been controlled.

Conservative management of extramammary paget disease with imiquimod.

Objective: Extramammary Paget disease is a rare cutaneous neoplasm that most frequently affects the vulva. Surgery remains the preferred treatment, despite its association with high recurrence rates. Few reports have described conservative treatments for vulvar Paget disease.

Pathologic complete response with neoadjuvant imatinib for locally advanced pelvic GIST.

There are few data that show pathologic complete response (pCR) to imatinib treatment in gastrointestinal stromal tumors (GISTs). We describe a case of a patient with pCR of a pelvic, locally advanced, high-risk GIST who was treated with neoadjuvant imatinib and ultimately underwent a conservative procedure. A 48-year-old male presented with a pelvic mass 10 cm in diameter.