Pathology - Skeletal Muscle/NMJ Flashcards
Sx’s: b/l proximal m. weakness and heliotrope rash
Dermatomyositis
What is the Tx for Myasthenia Gravis
AchE antagonist
How does BMD differ from DMD
Mutated dystrophin gene instead of deleted
Myasthenia Gravis is assc w/…
Thymic hyperplasia Thymoma
What is the Tx for Lambert-Eaton Syndrome
Resection of cancer
Hist: Endomysial inflammation (CD8) w/ necrotic m. fibers
Polymyositis
Def: inflammatory disorder of skin and SkM
Dermatomyositis
Sx’s: Weakness that worsens w/ use and improves w/ rest and includes the eyelids
Myasthenia Gravis
Lambert-Eaton Syndrome is assc w/…
SCLS (paraneoplastic syndrome)
What differentiates Dermatomyositis from Polymyositis clinically
No skin involvement in Polymyositis
What is assc w/ Dermatomyositis
Carcinoma (Gastric)
Sx’s: proximal m. weakness by 1 yo that progresses to distal weakness
Duchenne Muscular Dystrophy
What labs will be significant in Dermatomyositis
Increased CrK + ANA and anti-Jo-1 Ab
Def: AutoAbs against postsynaptic AchR at NMJ
Myasthenia Gravis
Sx’s: Weakness that worsens w/ use and improves w/ rest and spares the eyes
Lambert-Eaton Syndrome