Giant Pilomatricoma of the Scalp: A Case Report

Pilomatricoma is a benign cutaneous tumor originating from hair follicle matrix cells and characterized by the presence of subcutaneous nodules of up to 3.0 cm in diameter, usually on the head, neck and upper extremities. It is most common in the first two decades of life and after the age of 60. We report a case of an adult female patient was evaluated, presenting a solid tumoral lesion, with approximately 3.5 x 3.0 cm in size, in the scalp. It was thought to be a squamous cell carcinoma, sarcoma, amelanotic melanoma, or nodular basal cell carcinoma. The resection of the lesion was carried out and, at the histological examination, specific details were observed that led to the diagnosis of pilomatricoma. Pilomatricoma should be suspected in the differential diagnosis of other cutaneous tumors

Distribution coefficients water sediment for uranium and polonium in the Moulouya River (eastern Morocco), a river affected by abandoned mines of lead and zinc

Trabajo presentado a la II International Conference on Radioecological Concentration Processes (50 years later), celebrada en Sevilla (España) del 6 al 9 de noviembre de 2016.The Upper Moulouya Lead district is a region of Morocco affected by the presence of mining deposits, pit lakes and other mining wastes, due to the former mining activities developed in the 20th century. The Middle Moulouya is a region not affected by human activities and is studied for a better comprehension of results obtained in the Upper Moulouya region. Activity concentration of U-isotopes and 210Po in water and sediments was determined in samples collected from the Moulouya River (Eastern Morocco) and two tributaries. These results were used for the evaluation of distribution coefficient in the river. Some pit lakes resulting of former mining activities were also sampled and distribution coefficients were calculated for the mentioned radioisotopes. Sampling was made twice in different years. In the second sampling campaign a longer river area was studied.Peer reviewe