Pipestem capillaries

Pipestem Capillaries

Enlarged
Basal lamina: Thickened; PAS positive
Complement deposition on endothelium
Location
- Muscle: Endomysium
- Nerve: Endoneurium
Associated with
- Extravasated RBCs
- Hemosiderin

Associated disorders

Diabetes
- Multifocal neuropathy
- Lumbosacral plexopathy
Myopathy with Muscle fiber necrosis

Also see

Capillary pathology with Minimal myopathy

H&E stain

Gomori trichrome stain

Gomori trichrome stain

Gomori trichrome stain

Hemosiderin: Around endomysial capillaries

NADH stain

NADH stain

H & E stain

PAS stain

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3/22/2019