The tumour pulmonary micro-embolism is a rare condition characterized by the occlusion of pulmonary small arteries, arteriolas, and alveolar capillaries septales, accompanied of trombosis. Occasionally the development of pulmonary hypertension is the first manifestation of an occult neoplasia, in series of autopsies, an incidence from 3 to 26 % has been reported in solid tumors, being clinical evident in 8 %. Few cases have documented the development of this condition in patients with carcinoma hepatocelular, we report the case of a 16-year-old male who comes to the emergency with signs of cardiac insufficiency and cor pulmonare whose anatomopatological study confirmed a tumour massive microembolic compromise at pulmonary level and hepatocarcinoma.

El micro-embolismo tumoral pulmonar es una rara condición caracterizada por la oclusión de arterias pulmonares pequeñas, arteriolas, y capilares alveolares septales, acompañado de trombosis. Desarrolla ocasionalmente hipertensión pulmonar como primera manifestación de una neoplasia oculta, en series de autopsias se ha reportado una incidencia de 3 a 26 % en tumores sólidos, siendo clínicamente evidentes en un 8%. Pocos Casos se han documentado de esta condición en pacientes con carcinoma hepatocelular; nosotros reportamos el caso de un varón de 16 años que acude a la emergencia con signos de insuficiencia cardiaca y cor pulmonar cuyo estudio anatomopatológico confirmó la presencia de un hepatocarcinoma asociado a un compromiso tumoral micro-embólico Masivo a nivel pulmonar.

Experimental results of fixed-bed heat-transfer experiments with no chemical reaction are presented and discussed. The runs were carried out in a tubular integral reactor heated by an electrical furnace at temperatures in the range of 100 to 500°C. Experimental temperature profiles were determined for the electrical furnace, for the reactor wall, and for the fixed bed center. Industrial catalyst for the prereforming of hydrocarbons was employed as the packing material. The effects of process conditions (furnace temperature, gas flow rate) on the heat-transfer coefficients were evaluated. The experimental results were analyzed in terms of the external, wall, and internal thermal resistances, associated in series, and compared with model predictions. Under the conditions studied, the overall coefficient was mostly a function of the external effective heat-transfer coefficient. An alternative data treatment was proposed to determine the internal heat-transfer coefficient in fixed beds when wall temperature is not constant.