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(5 Results)![denervation (neurogenic atrophy)](https://www.arkanalabs.com/wp-content/uploads/2022/09/background-e1675109042289-432x288.png)
Neuro Notes
Denervation
This 66-year-old patient presented with complaints of asymmetric distal lower extremity weakness. Their past medical history was significant for atrial…
![Succinic acid dehydrogenase (SDH) enzyme](https://www.arkanalabs.com/wp-content/uploads/2022/05/Figure-1-432x288.jpg)
Neuro Notes
Succinic Acid Dehydrogenase
This 60 year-old patient presented with distal asymmetric muscle weakness and normal CPK. Which of the following abnormalities is…
![target fibers](https://www.arkanalabs.com/wp-content/uploads/2022/03/Figure-1-432x288.jpg)
Miscellaneous
Target Fibers On Trichrome
This 40-year-old patient presented with complaints of leg cramps, lower extremity muscle weakness, and loss of muscle mass. Laboratory studies…
![grouped atrophy, neuro notes, neuropathology](https://www.arkanalabs.com/wp-content/uploads/12/10/neuro_notes-432x288.jpg)
Neuro Notes
Grouped Atrophy
This skeletal muscle biopsy shows grouped atrophy, which is a finding characteristic of denervation. This morphologic alteration indicates the presence…
![Exocytosis, Neuro Notes, arkana laboratories, muscle biopsy](https://www.arkanalabs.com/wp-content/uploads/10/29/Neuro-Notes-432x288.jpg)
Neuro Notes
Exocytosis in a Skeletal Muscle Biopsy
This electron micrograph of two adjacent skeletal muscle cells demonstrates simultaneous exocytosis. Exocytosis in this case shows extravasation of lysosomes…