Transient Sideroblastic Anemia Post-COVID-19 Infection.

A 57-year-old gentleman presented to the hospital with progressive fatigue and dyspnea on exertion three months after recovering from COVID-19. He was noted to have severe anemia with reticulocytopenia. After excluding vitamin deficiencies and heavy metal toxicities, a bone marrow aspirate and biopsy were performed, which showed erythroid predominant trilineage maturing hematopoiesis with 79% ring sideroblasts and no dysplasia.

Hydrogen and polyhydroxybutyrate production from wheat straw hydrolysate using Caldicellulosiruptor species and Ralstonia eutropha in a coupled process.

This report presents an integrated biorefinery concept in which wheat straw hydrolysate was treated with co-cultures of osmotolerant thermophilic bacterial strains, Caldicellulosiruptor saccharolyticus and C. owensensis to obtain hydrogen, while the liquid effluent containing acetate and residual glucose was used as feed for polyhydroxybutyrate (PHB) production by Ralstonia eutropha. The Caldicellulosiruptor spp.

A case series of clinically undiagnosed hematopoietic neoplasms discovered at autopsy.

Objectives: In the United States, autopsy rates have diminished to less than 5% during the last half of the 20th century and the beginning of the 21st century for a multitude of reasons. Many believe this results in unrecognized malignancies that could have explained a patient's death.

Methods: We describe six deaths in which hematopoietic neoplasms were identified at autopsy but were not diagnosed clinically.

Fatal abdominal hemorrhage associated with gallbladder perforation due to large gallstones.

Gallbladder perforation is a relatively uncommon complication of acute cholecystitis and may occur with or without gallstones. Prophylactic cholecystectomy has been recommended for patients with very large stones (>3 cm) due to an increased risk of gallbladder cancer. We present the case of a 68-year-old woman who died of hemorrhagic shock following gallbladder perforation due to very large gallstones.