Conservation of complementary habitat types and small-scale spatial heterogeneity enhance soil arthropod diversity.

Humanity relies on soil fauna for important ecosystem services, as such our soils need sustainable management to ensure long-term biotic viability. However, environmental factors influencing the distribution and diversity of soil fauna are poorly understood, which limits effective conservation management. To address this issue, we assessed the influence of variables at different spatial scales (site, soil, and landscape) in different biotopes (natural forest patches and grasslands) in two contrasting geographical regions (inland Midlands and coastal Zululand, South Africa) on ant and springtail diversity in large-scale conservation corridors among commercial plantations.

Gamma probe-guided lymph node dissection ('gamma picking') in differentiated thyroid carcinoma.

The prognostic significance and the optimal management of regional lymph node metastases in patients with well-differentiated thyroid carcinoma continue to be controversial. The current surgical approach for nodal metastases is removal of grossly involved lymph nodes ("berry picking"). In patients with papillary thyroid cancer, this intraoperative sampling technique reveals tumor in only 15% to 60% of excised nodes.

Metaplastic carcinoma in an ectopic breast.

We describe the case of an 81-year-old woman in whom a mass developed in the chest wall over 3 weeks. No previous mass in that area was reported. Physical examination was remarkable only for a 13 cm painless, purplish mass in the anterior chest wall.