8
Diagnosis
Table 3. Key Infectious and Noninfectious Differential
Diagnoses for Granulomatous Lesions within
Commonly Biopsied Sites
Granulomatous Lesion within These Sites:
Lung
Lymph
Node Skin Liver
Bone
Marrow
Infectious etiologies
Bacteria
Tuberculosis
a
X X X X X
Nontuberculous mycobacteria
(MAC and M. kansasii)
a
X X X X X
Aspiration pneumonia
a
X
Brucella
X X X X
Tropheryma whippelii
X X
Mycobacterium leprae
X
Francisella tularensis
X X
Bartonella henselae
X X
Coxiella burnetii
X X
Fungi
Aspergillus
a
X X X
Histoplasma
a
X X X X
Blastomyces
a
X X
Coccidioides
a
X X
Cryptococcus
X X X X
Pneumocystis
X
Viruses
Herpes zoster
X X
Parasitic
Toxoplasma gondii
X X X
Schistosomiasis
X X X