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Table 1 Grading of the Electron Microscope Pillar Changes

From: Shedding some light on the use of mesh in gastroesophageal junction surgery

Grade

Ultrastructural findings

I

Dilation of the intermyofibrillar spaces

II

Swelling of sarcotubular structures

III

Focal degeneration of myofibrils

IV

Extended disruption–degeneration of the muscle architecture