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
