1/6. Fine structure of intrascrotal lymphatic vessels infected by wuchereria bancrofti adult worms.Lymphangiectasia represents a basic phenomenon of acute and chronic pathology in lymphatic filariasis, and the prevalence or degree of lymphatic dilation caused by filarial worms is considered an indirect measurement of the altered lymphatic function. We examined the morphological alterations of intrascrotal lymphatic vessels surgically removed from a volunteer infected by adult worms of wuchereria bancrofti. Scanning electron microscopy revealed lymphatic vessels with an irregular endothelium and adherent flattened lymphocytes and macrophages in variable proportions. On transmission electron microscopy the lymphatic vessels showed a thin endothelium which had an irregular contour and projected several cytoplasmic processes into the lumen. Numerous micropinocytotic vesicles and collagen fibers were abundant and disorganized. The hyperplastic endothelial cells and the subendothelial fibrosis suggest that abnormal changes in these cells may play a crucial role in the development of lymphangiectasia.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
2/6. breast filariasis diagnosed by fine needle aspiration cytology--a case report.We report a case of female who presented with a lump in the right breast. Fine needle aspiration cytology of lump revealed numerous adult filarial worms. Common habitat of the adult filarial worms is the lymphatic vessels and lymph nodes of limbs and their occurrence in breast is uncommon.- - - - - - - - - - ranking = 0.14285714285714keywords = vessel (Clic here for more details about this article) |
3/6. South American brugian filariasis: report of a human infection acquired in peru.A 27-year-old white woman from new york city acquired an infection by a brugia species while she camped in the Amazon basin of peru. She was infected by at least one adult male worm and one gravid female worm. Both worms were intact and in a lymphatic vessel of a right cervical lymph node. The lymph node and surrounding fibroadipose tissue contained many microfilariae. The male worm was 50 micron wide and the female, 100 micron. Both worms had thin (1 micron) cuticles with fine transverse striations. There were 3 to 4 somatic muscle cells per quadrant. Microfilariae had tails characteristic of the genus brugia. Although specific identification was not possible from the available material, the worm closely resembled brugia guyanensis, a parasite of the coatimundi (Nasua nasua) and the only species of brugia known in south america.- - - - - - - - - - ranking = 0.14285714285714keywords = vessel (Clic here for more details about this article) |
4/6. brugia-like filarial infection acquired in the united states.A mature male filarial worm was found in sections of an enlarged, painful retroauricular lymph node removed from an 18-year-old resident of new jersey. On the basis of its morphology and location in an obstructed lymph vessel, the worm was identified as probably a species of brugia, possibly brugia beaveri, a parasite of the raccoom. The infection in this case resembled one reported earlier from the same general area of the country, new york city. In the absence of demonstrable microfilaremia in this and other cases of zoonotic filariasis acquired in the united states, specific drug treatment after surgical removal of the worm is usually unnecessary.- - - - - - - - - - ranking = 0.14285714285714keywords = vessel (Clic here for more details about this article) |
5/6. Enzootic brugia infection in a two-year-old Colombian girl.Mature male and female filarial worms were present in a lymphatic vessel near a retro-auricular lymph node removed from a 2-year old Colombian girl. Although apparently mature microfilariae were present in the uterus of the female, none was detected in blood samples (Knott's) of peripheral blood taken during day or night. The identification of the worms as a species of brugia is suggested by their location in a dilated lymphatic vessel, morphology of adults, and the distribution pattern of tail nuclei of the microfilariae. This case is similar to another Colombian case reported from the Departamento del Santander del Sur, and suggests that zoonotic filarial infections may not be uncommon in colombia.- - - - - - - - - - ranking = 0.28571428571429keywords = vessel (Clic here for more details about this article) |
6/6. Short report: a case of fibrosing mediastinitis caused by wuchereria bancrofti.wuchereria bancrofti is a mosquito-borne filarial nematode that commonly invades lymphatic vessels. Common clinical manifestations include elephantiasis, orchitis, epididymitis, and chyluria. This report concerns an Egyptian man who developed superior vena cava syndrome secondary to a mediastinal mass that was found to contain a filarial nematode consistent with W. bancrofti. This is the first case, to our knowledge, of this parasite causing fibrosing mediastinitis.- - - - - - - - - - ranking = 0.14285714285714keywords = vessel (Clic here for more details about this article) |