Mycoplasma pneumoniae is an atypical bacterium that most commonly causes upper respiratory tract infections, but it can also cause pneumonia, referred to as "walking pneumonia." Although cavitary lesions are present in a wide variety of infectious and noninfectious processes, those attributable to M. pneumoniae are extremely uncommon; thus, to date, epidemiological studies are lacking. Here, we...

Cavitary lung lesions in histoplasmosis are usually associated with the chronic form of the disease. This report describes a ten-year-old boy with the clinical and serologic pattern of acute Histoplasma capsulatum infection who had multiple cavitary lesions.

Cavitary lung lesions are commonly caused by Staphylococcus aureus, Klebsiella pneumoniae. Pseudomonas rarely causes such lesion. Here we report a case of cavitary pneumonia due to pseudomonas aeruginosa in the setting catheter related blood stream infection 25-year-old male with crescentic IgA nephropathy who was on immunosuppressive medication.

OBJECTIVE To describe subretinal migration of gas and silicone oil in a series of patients with congenital cavitary optic disc anomalies and to further clarify the pathogenesis of the associated maculopathy. METHODS Medical records of 4 female patients, aged 8 to 34 years, who developed subretinal gas migration after vitreous surgery for macular detachment associated with cavitary optic disc ...

BACKGROUND The tuberculin skin test (TST) is used to test for latent tuberculosis (TB) infection and support the diagnosis of active TB. However, little is known about the relationship between the TST result and the clinical presentation of TB disease. METHODS We analyzed US TB surveillance data, 1993-2010, and used multinomial logistic regression to calculate the association between TST resu...

BACKGROUND Th1 cells play an essential role in immune protection against tuberculosis. Th17 cells might be involved with immune pathology in active human tuberculosis (TB). The balance between Th1 and Th17 cells in patients with cavitary tuberculosis needs to be clarified which might help understanding the immunological basis of pathologic pathogenesis in TB. METHOD Initially treated pulmonar...

Systemic lupus erythematosus (SLE) is an autoimmune disease of unknown pathogenesis. The frequency of SLE with cavitary lesion manifestation is very rare and is thought to be due to infection or pulmonary embolism. A 19-year-old female diagnosed with SLE complicated by lupus nephritis and cavitary pulmonary lesion is presented in this case report. Other diseases that can lead to such lesions we...