{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T19:17:48Z","timestamp":1761765468284,"version":"3.40.5"},"reference-count":15,"publisher":"American Academy of Pediatrics (AAP)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2011,11,1]]},"abstract":"<jats:p>An 8-year-old girl complained for 4 months of right arm pain, weakness in both legs, difficulty in arising from a seated or squatting position, and 1 month of pain in her hips, ankles, and knees. On physical examination, she had weak neck flexors, weak proximal and abdominal muscles, and an assisted Gower maneuver; both knees and ankles were painful. Erythematous macules on her elbows, knees, and medial ankles were present without heliotrope rash or dilated eyelid capillaries. She had nail-fold erythema and decreased numbers of nail-fold capillary end-row loops (ERLs) (5.42 ERLs per mm [normal: \u22656.8 ERLs per mm]) without digital ulcers or tight skin. Laboratory testing revealed slightly elevated creatine phosphokinase (440 IU\/L [normal: \u2264199 IU\/L]) and aldolase (11.7 U\/L [normal: \u22648.6 U\/L]) levels. Her eosinophilia (7.2%) was not characteristic of juvenile dermatomyositis. Rheumatologic evaluation included a positive antinuclear antibody test result (1:5120 titer), speckled pattern (normal: &amp;lt;80 titer), myositis-associated and -specific antibodies that showed indeterminate Mi-2, with the others negative, including p155\/140, elevated immunoglobulin G (IgG) (1440 mg\/dL [normal range: 608\u20131229]) and IgE (409 kU\/L [normal: &amp;lt;160 kU\/L]) levels, and normal levels of IgM and IgA. She had an increased neopterin level (20 nm\/L [normal: &amp;lt;10 nm\/L]) and decreased absolute count of CD3-CD56\/16+ natural killer cells (89 [lower normal limit: 138]). MRI of her thigh muscles revealed serpiginous increased T-2 signals consistent with inflammation and a complex round mass in the left pelvis. A muscle biopsy did not indicate juvenile dermatomyositis. Pelvic ultrasound confirmed a solid mass of the left ovary consistent with a mature teratoma. After surgical removal of the teratoma, the myositis, synovitis, and cutaneous findings resolved over 4 months without further therapy.<\/jats:p>","DOI":"10.1542\/peds.2010-2115","type":"journal-article","created":{"date-parts":[[2011,10,4]],"date-time":"2011-10-04T00:25:53Z","timestamp":1317687953000},"page":"e1293-e1296","source":"Crossref","is-referenced-by-count":15,"title":["Ovarian Teratoma Mimicking Features of Juvenile Dermatomyositis in a Child"],"prefix":"10.1542","volume":"128","author":[{"given":"Maria","family":"Ibarra","sequence":"first","affiliation":[{"name":"Divisions of Rheumatology and"},{"name":"Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pauline","family":"Chou","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois; and"},{"name":"Pathology, Children's 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