Relevance of breast cancer subtypes for magnetic resonance imaging response monitoring during neoadjuvant chemotherapy.

Changes in magnetic resonance imaging (MRI) during neoadjuvant chemotherapy (NAC) have been reported as predictive of pathology outcome in triple-negative and HER2-positive breast cancer. The purpose of our study was to evaluate the relevance of breast cancer subtype for MRI response in 24 women before and during NAC in our centre. Our results show that a reduction greater than 23% is associated with a pathological complete response (pCR) in Her-2-positive and ER-negative/Her2-negative breast cancer, and suggest a trend correlation between higher ADC values and pCR in these subtypes in comparison with ER-positive/Her2-negative breast cancers. Higher proliferating tumours respond better to chemotherapy and our study suggests that changes in MRI during NAC are predictive of pCR in these breast cancer subtypes.

Male breast cancer.

Male breast cancer accounts for around 1% of all breast cancer cases, but the incidence has increased over the past 25 years. The rarity of this entity precludes prospective randomized clinical trials. Although breast carcinoma in both genders share certain characteristics, notable differences have emerged. Familial cases usually have BRCA2 rather than BRCA1 mutations. Klinefelter syndrome is the strongest risk factor for developing male breast carcinoma. Men tend to be diagnosed at an older age than women. Presentation is usually a painless lump, but is often late, with more than 40% of individuals having stage III or IV disease. When survival is adjusted for age at diagnosis and stage of disease, outcomes for male and female patients with breast cancer is similar. Surgery is usually mastectomy with axillary clearance or sentinel node biopsy. Because 90% of tumors are hormonal receptor positive, tamoxifen is standard adjuvant therapy. Indications for radiotherapy and chemotherapy are similar to female breast cancer. For metastatic disease, hormonal therapy is the main treatment, but chemotherapy can also provide palliation.

The combination of FOLFOX4 and bevacizumab may enable salvage surgery of unresectable liver metastases in colon cancer.

Colorectal cancer treatment has experienced important advances in the last 5 years. New targeted therapies have been included in the classical regimens based on 5-fluorouracil, oxaliplatin, or irinotecan. This new approach has brought great revolution in the treatment of this type of cancer. Bevacizumab (Avastin), a new antivascular endothelial growth factor drug, has been shown to improve overall survival in combination with chemotherapy in first-line and second-line settings as compared with standard chemotherapy regimens alone. This case report demonstrates our experience with bevacizumab in a colon cancer patient with liver, lung, and regional lymph node metastases who had a relapse in the liver after adjuvant treatment with capecitabine (Xeloda). The addition of bevacizumab to the FOLFOX4 regimen resulted in a partial response that provided an opportunity for salvage hepatic surgery.

Idiopathic and recurrent thromboembolic phenomena in cancer patients.

BACKGROUND: Venous thromboembolism (VTE) is one of the most common complications in cancer patients. It is not only associated with both reduced survival and a high number of recurrences, but an idiopathic VTE also increases the likelihood of a cancer diagnosis. METHODS: Between January 2000 and October 2005 we reviewed the medical history of 88 patients who were admitted to a tertiary hospital and presented both a diagnosis of VTE and any type of tumour. The information collected included the type of tumour, the temporal association between tumour diagnosis and VTE, anticoagulation treatment applied and percentage of recurrences. RESULTS: Ten patients (11.4%) presented the VTE prior to the cancer diagnosis; only half of them underwent a posterior tumour screening routine. Fifteen patients (17%) were diagnosed simultaneously and 71% presented the VTE after the tumour was detected. In 47 patients (53.4%) no risk factors for VTEs were detected. Twenty-nine patients (31.7%) presented a recurrent VTE, mainly during chemotherapy treatment (66%). Less than half of the patients (47.57%) were receiving treatment with low-molecular- weight heparins (LMWH). CONCLUSIONS: Idiopathic VTEs may be the first manifestation of an occult neoplasia, but tumour screening is scheduled in only a few patients. Regarding the high incidence of recurrent VTE in cancer populations, a high percentage is attributed to the underuse of LMWH, whose efficacy in preventing recurrent phenomena is superior to oral dicumarinics.