In some of the first applications of modern quantum mechanics to the spectroscopy of many-electron atoms, Ettore Majorana in 1931 solved several outstanding problems by developing the theory of autoionization. Later literature makes only sporadic references to this accomplishment. After reviewing his work in its contemporary context, we describe subsequent developments in understanding the spec...

To ensure the early detection of recurrent disease, all patients should undergo routine surveillance following partial nephrectomy for renal cell carcinoma. In order to optimize resource allocation and avoid unnecessary radiation exposure, the frequency and duration of surveillance should be tailored to the individual patient's risk of cancer recurrence. The evidence for surveillance after part...

Metabolic acidosis is associated with increased urinary calcium excretion and related sequelae, including nephrocalcinosis and nephrolithiasis. The increased urinary calcium excretion induced by metabolic acidosis predominantly results from increased mobilization of calcium out of bone and inhibition of calcium transport processes within the renal tubule. The mechanisms whereby acid alters the ...

In the United States, when the cost-containment paradigm shifted from regulation to competition, all-payer hospital ratesetting went out of favor. After reviewing the published literature and supplementing the existing literature with more current information, the author concludes that all-payer ratesetting is able to meet its multiple objectives of cost containment, reduction of the amount of ...

the spontaneous regression of neuroblastoma to ganlioneuroma is a rare occurrence. reviewing the literature, we found no more than 12casesreported.'•2.9.,o.'4.1s we report a case of metastatic neuroblastoma of multifocal skeletal and soft tissue areas with gross deformities which regressed to ganglioneuroma, with good prognosis.

Individuals with Down syndrome (DS) have a unique profile of neoplasms, with a higher incidence of leukemias and a lower incidence of solid tumors than seen in the general population. We recently encountered two cases of infants with DS with retroperitoneal teratoma. After reviewing the literature on teratomas in DS, we found that the incidence of retroperitoneal teratomas was higher and the in...

Descemet's stripping endothelial keratoplasty is an emerging technique finalized to treat endothelial dysfunction replacing only the pathological portion of cornea. The advent of any new technique puts us in front of new complications. The epithelial ingrowth is a well-known complication already studied in case of ocular trauma and more recently in refractive surgery. This job analyzed the pote...

By Wn..utM T. BURKE AND CHARLES H itRIs H AVING DEMONSTRATED that profound changes occur in the cellular distribution of the bone marrow of the albino rat at different ages,’ it was decided to supplement these findings by the enumeration of the total counts of bone marrow cells per mg. of bone marrow in parallel groups of rats. After reviewing some of the literature in this field,27 a technic w...