Innovative xanthan gum-based nanocomposites for asphaltene precipitation prevention in shale and carbonate rocks.

Asphaltene deposition in porous media creates many challenges in porous media. This study synthesizes ZnO/SiO/xanthan nanocomposites (NCs) to adsorb asphaltene and reduce its effect on the shale and carbonate rocks. NCs structure is analyzed using SEM, EDX, BET, and FTIR tests.

Cytologic features of undifferentiated and dedifferentiated carcinomas of the endometrium.

Background: Undifferentiated carcinoma (UC) is a rare, aggressive subtype of endometrial carcinoma. Dedifferentiated carcinomas (DCs) are UCs associated with a component of well differentiated endometrioid carcinoma. The authors sought to describe the morphologic features of UCs and DCs in cytologic specimens.

Type 1 Choledochal Cyst with Ectopic Pancreas and Septate Gallbladder.

Choledochal cysts (CCs), congenital cystic dilatation of the biliary tract, are more commonly identified in females and have been associated with a myriad of other developmental abnormalities. We present a male infant who was diagnosed with type I CC prenatally. He subsequently underwent cyst and gallbladder resection with hepaticoduodenostomy reconstruction at the age of 6 months.