Primary renal non-Hodgkins lymphoma presenting with acute renal failure.

Primary renal lymphoma (PRL) has been reported in medical literature. Its occurrence is rare and controversial, the kidney being an extranodal organ. We report a case of primary renal lymphoma presenting with acute-on-chronic renal failure and unilateral involvement of the left kidney without obstruction and with minimal peripheral organ involvement.

Hypernatremia in the elderly.

Hypernatremia is defined as a plasma sodium concentration greater than 145meq/liter. This is primarily due to water loss in adults although increased salt ingestion may be a cause for it. When plasma sodium concentration rises above 145meq/liter, thirst is stimulated, this results in ingestion of water.