An examination of specimens of Anas georgica Gmelin (Anatidae) from Regiondel Bio-Bio and Region del Maule, Chile, revealed the presence of two digenean species reported forthe Holartic Region: Australapatemon burti (Miller, 1923) Dubois, 1968 (Strigeidae) andParamonostomum pseudalveatum Price, 1931 (Notocotylidae). (more…)
Pseudorhabdosynochus bacchus sp. nov. (Diplectanidae) is described from thegills of the whitespotted grouper Epinephelus coeruleopunctatus collected off New Caledonia, SouthPacific, and is the first monogenean reported from this fish. (more…)
The Gyrodactylus fauna of 274 fish taken from ten salmonid farms in Polandwas sampled in 2006. Four fish species were investigated: rainbow trout Oncorhynchus mykiss, browntrout Salmo trutta (morphs fario, lacustris, and trutta), grayling Thymallus thymallus and huchenHucho hucho. (more…)
BACKGROUND: Absolute criteria for grading oligodendrogliomas are somewhatpoorly defined in contrast to those for grading astrocytic tumors, and cytologic features ofanaplastic oligodendrogliomas have been poorly described. CASE: A 63-year-old man presented with atoppling gait. Radiologic examination revealed a 7-cm mass with calcifications in the right frontallobe. Intraoperative smears of the tumor showed hypercellular, loosely cohesive cell clusters andsingle cells with nuclear pleomorphism, numerous apoptotic cells and no discernible fibrillaryprocesses. (more…)
BACKGROUND: Cerebrotendinous xanthomatosis is a rare, autosomal recessive,inherited lipid storage disease characterized by accumulation of cholestanol and cholesterol in mosttissues. The disease is caused by mutations in the sterol 27-hydroxylase gene, leading to a blockin bile synthesis, with accumulation of substrates for this enzyme, including cholesterol, resultingin an increase in the conversion of cholesterol to cholestanol. (more…)
BACKGROUND: Cystic nephroma is an uncommon pediatric renal neoplasm. It needsto be differentiated from cystic partially differentiated nephroblastoma and from other renalneoplasms showing extensive cystic change. (more…)
BACKGROUND: Sporotrichosis is a granulomatous fungal infection caused bySporothrix schenckii, which frequently causes cutaneous or lymphocutaneous lesions and rarely hasoral manifestations. (more…)
BACKGROUND: Since the first description of extranodalfollicular dendriticcell sarcoma in 1994, there has been a gradual increase in understanding of the morphologic featuresand clinical presentation of this tumor. (more…)
