Radiological features of pulmonary tuberculosis in 963 HIV-infected adults at three Central African Hospitals.

Tuberculosis is one of the most important infectious complications in human immunodeficiency virus (HIV)-infected individuals in sub-Saharan Africa. In this radiological study, we detail the chest radiographic findings of Zairean and Zambian adults with a diagnosis of AIDS and tuberculosis as seen at three Central African Hospitals. Between 1992 and 1995, consecutive chest radiographs of 963 HIV-infected adults aged between 16 years and 56 years with microbiologically confirmed tuberculosis (TB) were reviewed: (1) 362 adults from Sendwe General Hospital, Lubumbashi, Zaire, (2) 175 from Mama Yemo Hospital, Kinshasa, Zaire, and (3) 426 adults from The University Teaching Hospital (UTH), Lusaka, Zambia.

Ultrasonographic demonstration of intussusception in the acute abdomen in a Zambian infant.

Ultrasonography demonstrated intussusception in a healthy and well nourished seven-month-old infant who presented with a four-day history of vomiting and abdominal pain. Plain film showed a right-sided abdominal mass, a paucity of gas within the right lower quadrant and loops of distended small bowel. This led to ultrasonography of the gastrointestinal tract that demonstrated typical "bull's eye" pattern within the intussusception process.

"Skip areas" in hepatic steatosis: a sonographic-angiographic study.

"Skip areas" in focal steatosis describes a newly proposed "subsegmental type" of focal steatosis, which differs in both extent and topography from the more classic "lobar or segmental type" of focal steatosis. In the subsegmental type of steatosis, fatty infiltration can be considered homogeneous throughout the liver, with the exception of small flattened portions of less affected parenchyma, called "skip areas." These regions are mainly located in the subcapsular areas or along the interlobar fissures or the gallbladder bed.

Anechoic halo in solid liver tumors: sonographic, microangiographic, and histologic correlation.

The origin of the sonographic halo sign in liver metastases was studied after autopsy in 33 livers with macroscopic tumoral involvement. For 20 lesions a detailed comparison of findings from high-resolution 7.5- and 10-MHz sonography, microangiography, and histology was carried out.