Table 1 Initial and expanded differential diagnoses for male HIV(+) patient who presented with painful right inguinal adenopathy

Infectious:

-tuberculosis, atypical mycobacterium

-lymphogranuloma venereum

-cat scratch disease

-HIV adenopathy

-sebaceous cyst

-sporotrichosis

-other infections (e.g., sexually transmitted diseases)

Infectious:

-adenitis

-disseminated mycobacterium avium intercellulare

-disseminated tuberculosis

-cryptococcus

-histoplasmosis

-nocardia restricta

Malignant:

-Hodgkins' Disease

-non-Hodgkins' lymphoma

-AIDS-related lymphoma

-multiple myeloma

-testicular cancer

Malignant:

-angiosarcoma