Necrotic mediastinal lymphadenopathy: Tuberculosis or Sarcoidosis, a diagnostic conundrum - A case report and review of the literature.

Sarcoidosis is an uncommon disease involving pulmonary parenchyma and lymph nodes. Non-necrotizing, bilaterally symmetric hilar, and right paratracheal lymph nodes are the pathognomonic imaging features of sarcoidosis. Rarely, atypical radiological findings of sarcoidosis may mimic mycobacterial infections, posing a diagnostic dilemma, especially in tuberculosis endemic countries.

Childhood and Youth Onset Diabetes: A Single Centre Experience.

Objectives: To identify proportion of various types of diabetes and differences between type 1 and type 2 diabetes in patients with youth onset diabetes (onset below 25 completed years of age). In addition, concurrent autoimmune diseases in type 1 diabetes were studied in a subset of patients.

Methods: A total of 577 patients (192 girls) with diabetes onset at median age of 14 y (range 1 mo-25 y) with median duration of 1 y (range day of diagnosis- 43 y) were included.

Immunotherapy for Infectious Diseases: Past, Present, and Future.

Passive immunotherapy for established infections, as opposed to active immunization to prevent disease, remains a tiny niche in the world of antimicrobial therapies. Many of the passive immunotherapies currently available are directed against bacterial toxins, such as botulism, or are intended for agents of bioterrorism such as anthrax, which fortunately has remained rare. The emergence of Ebola virus and multi-drug resistant pathogens, however, may breathe new life into the immunotherapy field as researchers seek non-antibiotic interventions for infectious diseases.