Respiratory failure and symptomatic hypercalcaemia complicating pulmonary tuberculosis

Area of Science:

• Pulmonology
• Infectious Diseases
• Endocrinology

Background:

• Tuberculosis (TB) is a significant cause of pneumonia globally.
• Respiratory failure is a severe manifestation of advanced pneumonia.
• Hypercalcemia is an uncommon complication of tuberculosis, particularly in vitamin D-deficient populations.

Purpose of the Study:

• To report a rare case of severe pneumonia due to Mycobacterium tuberculosis.
• To discuss the unusual complication of symptomatic hypercalcemia in a TB patient.
• To explore the potential contributing factors to hypercalcemia in the context of TB treatment.

Main Methods:

• Case report of a 47-year-old male patient.
• Diagnosis of severe pneumonia and Mycobacterium tuberculosis infection.
• Monitoring of patient's response to antituberculous therapy and development of hypercalcemia.

Main Results:

• The patient presented with respiratory failure secondary to severe pneumonia.
• Mycobacterium tuberculosis was identified as the causative agent.
• The patient responded to standard antituberculous therapy but subsequently developed symptomatic hypercalcemia.
• Hypercalcemia was likely multifactorial, possibly involving sun exposure and vitamin D activation within TB granulomas.

Conclusions:

• Severe pneumonia can be caused by Mycobacterium tuberculosis, necessitating intensive care.
• Symptomatic hypercalcemia is a rare but possible complication of tuberculosis.
• Factors such as sunbathing and vitamin D metabolism may influence hypercalcemia development in TB patients, especially in those not vitamin D deficient.