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Epidemiology: Rheum, Arthritides, Endocrine

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Answer
Sarcoid prevalence   Swedes, Danes, AA; F>M  
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Sarcoid lifetime risk   0.85% (W); 2.4% (AA)  
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Sarcoid mortality   d/t resp fail = 1-5%  
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SLE epi   US: 15-50/100k (MC AAF); 3x in 40 yrs; 90% F; M = less photosensitivity, more serositis; Elderly: milder dz; 65% 16-55 yo; urban > rural  
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Most common connective tissue disorder involving the esophagus:   Scleroderma esophagus (atrophy & fibrosis of esophageal smooth mx)  
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Polymyositis/Dermatomyositis epi   2 peaks (kids; >50 yo); very rare; often assoc w/malig (esp DM) & other autoimm dz; PM 3:1 F:M  
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Inclusion Body Myositis (IBM): Epi   In pts >50yrs: most common inflam myopathy; M 2X F  
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Scleroderma Epi   F 3-4 x M; US: 10-20/ million; age, gender & ethnic sig factors in suscept; more common in AA pts; usu 3d / 4th decade  
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Giant cell arteritis Epi   White; >50 yo; F:M = 2:1  
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polyarteritis nodosa   3:1 M:F, onset usu 40-60 yo; 30% assoc w/hep B  
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Diabetes Mellitus: incidence of acute life threatening complications   DKA ( 4.6-8 episodes per 1000 pts w/ DM); hyperglycemic hyperosmolar syndrome (HHS: < 1% of all primary DM admissions)  
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Gout epi   M 40-50 yo; F 65 yo; genetic, environmental  
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Prevalence inflammatory arthritis in IBD pts   30-35%  
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Spondylo prevalence   2:1000; usu adolescence or early adulthood  
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OA prevalence:   60-90% of >65; 1 in 5 adults; onset 40-60 yo; 3:1 F:M; knee OA most common cause LT disability in US  
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Inf arthritis incidence   2-5/100,000 (bimodal: kids, >50 yo) (in RA: 28-38/100,000)  
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Gono arthritis: incidence   2/3 of infxs arth in pts <40; DGI sequela; F>M (higher risk w/ menses & PG)  
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RA epi   Worldwide: 0.8% adult; 3:1 F:M; peak onset 25-55 yo; 3-5 yr reduction in life exp; Incidence is declining  
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Osteoporosis   F>M (4:1); 1.7M fx in US; 6M hip fx world; W&Asian > Hisp > AA; 4 in 10 WF will fx  
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Androgen-secreting adrenal ca prevalence   More common than adenomas  
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most common thyroid neoplasm   papillary (75-80%); 3:1 F:M, inc w/age; other: follicular, medullary, anaplastic  
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Hypothyroid prevalence   2% of US F (0.2% US M); 1 in 4000 newborns  
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Graves dz   6:1 F:M. 20-40 yo. +FH. comorbid w/other autoimmune dz or Addison, celiac, cardiomyopathy  
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Most common cause of hyperthyroidism in US =   Graves dz  
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Most common thyroid disorder in US =   Hashimoto (chronic) thyroiditis: 1% (5% of >65yo); FH, 6:1 F:M, hep C  
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medullary thyroid ca   1/3 sporadic, 1/3 familial, 1//3 MEN2  
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Most common Diabetes Mellitus complication   neuropathy  
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Pheochromocytoma   90% benign, 10% malignant. Found in 0.1-0.5% of HTN pts. May be part of MEN syndromes  
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What % of Diabetes Mellitus pts have T2DM?   90% (of those, 75-80% associated with obesity)  
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