TY - CHAP M1 - Book, Section TI - Psoriatic Arthritis A1 - Manno, Rebecca L. A1 - Yazdany, Jinoos A1 - Tarrant, Teresa K. A1 - Kwan, Mildred A2 - Papadakis, Maxine A. A2 - McPhee, Stephen J. A2 - Rabow, Michael W. A2 - McQuaid, Kenneth R. PY - 2023 T2 - Current Medical Diagnosis & Treatment 2023 AB - ESSENTIALS OF DIAGNOSISPsoriasis precedes arthritis in 80% of cases.Arthritis: usually asymmetric, with “sausage” appearance of fingers and toes (dactylitis); polyarthritis that may resemble rheumatoid arthritis.Sacroiliac joint involvement common.Radiographic findings: osteolysis; pencil-in-cup deformity; relative lack of osteoporosis; bony ankylosis; asymmetric sacroiliitis and atypical syndesmophytes. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1193125943 ER -