1. FSGS, not otherwise specified (NOS; also known as classic FSGS)
2. FSGS, perihilar variant
3. FSGS, cellular variant
4. FSGS, collapsing variant (also known as collapsing glomerulopathy)
5. FSGS, tip variant
classic, or NOS; perihilar variant, in which more than 50% of glomeruli with segmental lesions display hyalinosis and sclerosis involving the vascular pole region; cellular variant, manifesting endocapillary hypercellularity; collapsing variant, in which at least one glomerulus has global collapse and overlying visceral cell hypertrophy and hyperplasia; and tip variant with segmental lesions involving the tubular pole
2. FSGS, perihilar variant
3. FSGS, cellular variant
4. FSGS, collapsing variant (also known as collapsing glomerulopathy)
5. FSGS, tip variant
classic, or NOS; perihilar variant, in which more than 50% of glomeruli with segmental lesions display hyalinosis and sclerosis involving the vascular pole region; cellular variant, manifesting endocapillary hypercellularity; collapsing variant, in which at least one glomerulus has global collapse and overlying visceral cell hypertrophy and hyperplasia; and tip variant with segmental lesions involving the tubular pole