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(8 Results)![](https://www.arkanalabs.com/wp-content/uploads/2023/08/Figure-1-432x288.jpg)
Mild Nonspecific Changes with Significant Genetic Finding
Clinical History This 30-year-old patient presented with complaints of severe exertional muscle stiffness and pain, and similar symptoms upon exposure…
![](https://www.arkanalabs.com/wp-content/uploads/2023/06/M23-00645_Frozen_SDH_COX_2-copy2-432x288.jpg)
Segmental COX-Negative Fibers
Clinical History This 40-year-old female who presented with generalized muscle weakness, progressive ptosis and cognitive impairment. Question What of the…
![Amyloid C5b-9](https://www.arkanalabs.com/wp-content/uploads/2023/04/M23-00545B_Frozen_CongoRed_Light_2_polarized-copy-2-432x288.jpg)
Amyloid C5b-9
Clinical History: This 64-year-old patient presents with progressive distal bilateral upper and lower extremity numbness and pain. They also reported…
![focal relatively circumscribed collection of mononuclear histiocytes with admixed chronic lymphoid inflammation](https://www.arkanalabs.com/wp-content/uploads/2022/06/Figure-1-432x288.jpg)
Granulomatous Myopathy and Neuropathy
This 40-year-old patient presented with a three year history of slowly progressive generalized muscle weakness. More recently their hands and…
![Polyglucosan bodies, Some of the muscle fibers in this image contain multiple refractile angular/rhomboid shaped well-circumscribed structures within the sarcoplasm](https://www.arkanalabs.com/wp-content/uploads/2022/04/Figure-1-scaled-1-432x288.jpg)
Muscle Inclusions
This 50-year-old patient presented with complaints of progressive leg weakness and dysesthesia (burning sensation) in a sock and glove distribution.…
![Tissue Gram stain, inflamed skeletal muscle](https://www.arkanalabs.com/wp-content/uploads/08/27/Figure-1-432x288.png)
Tissue Gram Stain
This 50-year-old female presents with progressively worsening swelling and pain involving her left hip and buttock of four days…
![Myopathy with Lobulated Muscle Fibers](https://www.arkanalabs.com/wp-content/uploads/06/18/Figure-1-432x288.png)
Acquired Etiologies of Myopathy with Lobulated Muscle Fibers
An elderly male patient presents with a chief complaint of dull achy pain. The patient relates that the pain is…
![Fibrous Body, neuro path, arkana laboratories, Muscle biopsy](https://www.arkanalabs.com/wp-content/uploads/02/26/Neuro-Notes-225-432x288.jpg)
Fibrous Body
A 75-year-old female patient presents with proximal muscle weakness, characteristic skin rash, and dysphagia. Laboratory workup reveals elevated CPK 3500.…