Martinus A. Beek

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BACKGROUND Axillary reverse mapping (ARM) is a technique to map and preserve upper extremity lymphatic drainage during axillary lymph node dissection (ALND) in breast cancer patients. We prospectively evaluated the metastatic involvement of ARM-nodes in patients who underwent an ALND for clinically node positive disease following (neo)adjuvant chemotherapy(More)
BACKGROUND Axillary lymph node dissection (ALND) in patients with breast cancer provides prognostic information. For many years, positive nodes were the most important indication for adjuvant systemic therapy. It was also believed that regional control could not be achieved without axillary clearance in a positive axilla. However, during the past 20 years(More)
In this study, the availability of physico-chemical and ecotoxicological information on 78 transformation products for 20 regularly used pesticides in the open literature is evaluated. Based on this information, it is attempted to predict the relative risk for the aquatic environment of each transformation product in comparison to its parent pesticide. It(More)
BACKGROUND Axillary lymph node dissection (ALND) in patients with breast cancer has the potential to induce side-effects, including upper-limb lymphedema. Axillary reverse mapping (ARM) is a technique that enables discrimination of the lymphatic drainage of the breast from that of the upper limb in the axillary lymph node (LN) basin. If lymphedema is caused(More)
BACKGROUND Axillary reverse mapping (ARM) is a technique that discerns axillary lymphatic drainage of the arm from the breast. In the current study, we retrospectively evaluated the incidence of metastatic axillary lymph node involvement, including ARM lymph nodes, in clinically node positive breast cancer patients (cN+ patients) in whom neo-adjuvant(More)
A considerable percentage of breast cancer patients who have undergone an axillary lymph node dissection (ALND) experience postoperative complications, with lymphoedema occurring most frequently. Axillary Reverse Mapping (ARM) is a new technique in which the lymphatic drainage system of the upper extremity can be visualized during an ALND. If lymphoedema is(More)
Axillary reverse mapping (ARM) is a technique by which the lymphatic drainage of the upper extremity that traverses the axillary region can be differentiated from the lymphatic drainage of the breast during axillary lymph node dissection (ALND). Adding this procedure to ALND may reduce upper extremity lymphedema by preserving upper extremity drainage. This(More)
BACKGROUND Intra-abdominal abscesses are the most common complication after perforated appendicitis and remain a significant problem ranging in incidence from 14 to 18%. Drainage following appendectomy is usually determined by whether the underlying appendicitis is simple or complicated and largely determined by the surgeons' belief, based on expertise or(More)
BACKGROUND Seroma formation, after breast surgery is a commonly seen complication with an incidence ranging from 10 to 85 %. In general, though seroma usually disappears within several weeks, some patients are troubled with chronic seroma. Seroma predisposes to infection leading to wound related complications and may also delay adjuvant chemoradiation,(More)
Promising wheat lines from FAO's International Program for Horizontal Resistance (IPHR) in Brazil and Zambia were tested in the Netherlands against brown rust (Puccinia recondita. f.sp.tritici). Race nursery tests were performed on isolated field plots using five monopustular isolates from the Netherlands representing at least four races. Mature plants of(More)