Related by context. All words. (Click for frequent words.) 67 brachial plexus 66 brachial plexus palsy 66 clubfeet 65 chorioamnionitis 65 Ectopia Cordis 65 shoulder dystocia 65 craniofacial deformities 65 myelomeningocele 64 neurological complications 64 ruptured aneurysms 64 Intussusception 64 inguinal hernias 64 femoral neck fractures 64 transfusion syndrome 63 intraoperative complications 63 nontraumatic 63 femoral fracture 63 chronic subdural hematoma 63 calcaneal fractures 63 post thrombotic syndrome 63 cleft lip palate 63 malperfusion 63 thoracic aortic aneurysm 63 contractures 63 postoperative pulmonary 63 chondral 63 Erb palsy 62 perioperative complications 62 pelvic fractures 62 postpartum hemorrhage 62 fibroma 62 Lumbar spinal stenosis 62 femoral fractures 62 postpartum haemorrhage 62 embolic stroke 62 arthrosis 62 infantile hemangiomas 62 femoroacetabular impingement 62 vascular birthmarks 62 thoracic aortic aneurysms 62 placenta accreta 62 TMJ disorder 62 postoperative infections 62 postoperative infection 62 cardiac tamponade 62 carcinoid tumor 62 ganglion cysts 62 lymphedema swelling 62 venous malformations 61 Fluid retention 61 clavicle fractures 61 benign positional vertigo 61 Avascular necrosis 61 neurologic complications 61 perinatal asphyxia 61 Perthes disease 61 Surgical excision 61 spinal deformities 61 congenital deformity 61 femoral neck fracture 61 abnormal uterine bleeding 61 urolithiasis 61 postsurgical 61 labral tears 61 Chiari malformation 61 anal incontinence 61 post partum haemorrhage 61 skeletal dysplasia 61 epidural analgesia 61 recurrent laryngeal nerve 61 neonatal encephalopathy 61 prolonged immobilization 61 gynecologic surgery 61 keloid scars 61 vascular occlusion 61 craniofacial defects 61 vein thrombosis 61 leiomyomas 61 hydrops 61 intrathoracic 61 impingement syndrome 61 arthropathy 61 nonsurgical treatment 61 fracture fixation 61 vascular anomalies 60 microangiopathy 60 portal vein thrombosis 60 idiopathic scoliosis 60 pelvic prolapse 60 retinal hemorrhage 60 vertebral compression fractures VCFs 60 lumbar spinal 60 decubitus ulcers 60 swallowing disorders 60 uterine prolapse 60 esophagogastric 60 bladder exstrophy 60 cranio 60 hydrocele 60 Cleft palate 60 patent ductus arteriosus 60 radicular pain 60 spinal pathologies 60 urethral strictures 60 femur fractures 60 congential 60 basilar 60 glenohumeral joint 60 intraoperative bleeding 60 radiographic findings 60 neuropathies 60 cerebral angiography 60 congenital deformities 60 hypopituitarism 60 craniofacial abnormalities 60 congenital cardiac 60 primary hyperparathyroidism 60 varicella infection 60 coarctation 60 pyelonephritis 60 thymectomy 60 fibromatosis 60 neonatal herpes 60 sonographic appearance 60 intracranial aneurysms 60 thromboses 60 chronic periodontitis 60 humeral fractures 60 fat embolism 60 meniscal tears 60 truncal 60 tarsal tunnel 60 ectopia 60 Heavy menstrual bleeding 60 tibial fractures 60 joint arthroplasty 60 acute myocarditis 60 spinal compression fractures 60 Gynecomastia 60 Scheuermann kyphosis 59 vertebral compression fractures 59 skeletally immature patients 59 spinal metastases 59 venous disorders 59 aortic rupture 59 distal radial fracture 59 cerebral vasospasm 59 arachnoiditis 59 abdomen pelvis 59 osteoporotic compression fractures 59 acute aortic dissection 59 TKAs 59 vascular dysfunction 59 neurologic deficits 59 bone deformity 59 cryptogenic stroke 59 femoral shaft fractures 59 congenital birth defects 59 postoperative complications 59 hip arthroscopy 59 vertebral artery dissection 59 urethral stricture 59 hiatus hernia 59 skin abscesses 59 bowel resection 59 lumbar disk herniation 59 callus formation 59 anatomical abnormalities 59 SNHL 59 haematomas 59 malignant neoplasm 59 Langerhans cell histiocytosis 59 oncologic surgery 59 renal scarring 59 fibrous dysplasia 59 patellar dislocation 59 valve implantation 59 Ponseti Method 59 atresia 59 molar pregnancy 59 pleural effusions 59 Fibroid tumors 59 laryngospasm 59 disk herniation 59 vaginal childbirth 59 intrathecal baclofen 59 hydronephrosis 59 cystic lesions 59 obstetric complications 59 uterine perforation 59 Morton neuroma 59 intracranial hypertension 59 deep vein thromboses 59 thoracic aortic 59 cleft lip cleft palate 59 tricuspid regurgitation 59 pacemaker implantation 59 postoperative AF 59 dysmenorrhoea 59 adrenalectomy 59 venous reflux 59 trochanteric bursitis 59 cervical spine fractures 59 venous drainage 59 varicoceles 59 defibrillator implantation 59 video assisted thoracoscopic 59 esophageal perforation 59 congenital anomaly 59 diabetic ulcer 59 DVT PE 59 mammoplasty 59 craniectomy 59 pulmonary artery banding 59 TMJD 58 Herniated discs 58 hiatal hernias 58 thyroid dysfunction 58 arterial occlusion 58 pulmonary resection 58 Carotid artery 58 nonoperative treatment 58 femur fracture 58 suppurative 58 esotropia 58 superior mesenteric artery 58 discogenic pain 58 umbilical hernias 58 trochanteric 58 genitourinary tract 58 aneurysmal subarachnoid hemorrhage 58 aortic root replacement 58 femoral shaft fracture 58 symptomatic intracranial 58 Raynaud disease 58 Ebstein anomaly 58 tension pneumothorax 58 reoperations 58 pathologic fractures 58 endoscopic retrograde cholangiopancreatography ERCGrant Parpan 58 proximal humeral fractures 58 surgical decompression 58 pelvic anatomy 58 tibial plateau fractures 58 varicocele 58 sonographic diagnosis 58 radiculopathy 58 congenital scoliosis 58 Hypertrophic 58 cartilage defects 58 gynecological procedures 58 artery stenosis 58 craniopagus 58 dysfunctional voiding 58 orthopaedists 58 retinal detachments 58 neurologic sequelae 58 reimplantation 58 postoperative complication 58 placenta praevia 58 chiropractic manipulations 58 lower extremity amputations 58 colonoscopic 58 carotid artery blockage 58 deformational plagiocephaly 58 Venous thromboembolism 58 cardiac insufficiency 58 osteoid osteoma 58 lumbosacral 58 constipation hemorrhoids 58 pediatric cataract 58 uterine fibroid tumors 58 Crouzon syndrome 58 limb spasticity 58 Mohs micrographic surgery 58 corneal ectasia 58 decompressive surgery 58 valvuloplasty 58 diagnosed prenatally 58 recurrent miscarriages 58 craniosynostosis 58 cervical spondylosis 58 hamartoma 58 thrombi 58 torticollis 58 varus deformity 58 inguinal hernia 58 congenital abnormalities 58 esophageal reflux 58 cervical spinal cord 58 laparoscopic nephrectomy 58 atrial septal defects 58 tibia fractures 58 posttraumatic arthritis 58 vaginal hysterectomy 58 laparoscopic bariatric surgery 58 KYPHON Balloon Kyphoplasty 58 iatrogenic 58 retinal hemorrhages 58 inguinal hernia repair 58 upper gastrointestinal endoscopy 58 atelectasis 58 Eisenmenger syndrome 58 sonographically guided 58 hallux limitus 58 vaginal hysterectomies 58 cerclage 58 plain radiographs 58 tract infections 58 thoracentesis 58 PPCM 58 perioperative mortality 58 anastomotic leak 58 Cesarean deliveries 57 ventral hernias 57 osteochondromas 57 Hemangiomas 57 RVOT 57 neurological sequelae 57 dissected aorta 57 unruptured aneurysm 57 pulmonary hypoplasia 57 noncardiac 57 atrioventricular septal defect 57 intercranial 57 fistulae 57 pseudoaneurysm 57 epididymitis 57 acetabular dysplasia 57 aneurisms 57 cochlear implantation 57 infective endocarditis 57 neuromotor 57 intracranial haemorrhage 57 corticosteroid injections 57 Legg Calvé Perthes disease 57 limb deformities 57 wound dehiscence 57 juvenile idiopathic arthritis 57 Cervical spine 57 adenoidectomy 57 Wernicke encephalopathy 57 vascular malformation 57 lipomas 57 neural tube defects NTDs 57 carotid stenosis 57 ureteral stones 57 undescended testes 57 dentinal hypersensitivity 57 Aortic stenosis 57 Achilles tendon ruptures 57 Wilms tumors 57 incisional hernias 57 aortic valve stenosis 57 bowel perforations 57 osteoporotic vertebral compression fractures 57 multiorgan 57 colon resection 57 hypoplasia 57 osteotomies 57 colon perforation 57 bladder augmentation 57 cleft lips cleft palates 57 pathological fractures 57 pseudotumor 57 rhythm disturbances 57 cortical dysplasia 57 coronary blockages 57 hallux valgus 57 tracheal intubation 57 hypoplastic 57 preoperative evaluation 57 percutaneous drainage 57 undergoing hysterectomy 57 degenerative spondylolisthesis 57 abruption 57 traumatic amputations 57 cerebral vascular disease 57 aortic aneurysms 57 postoperative atrial fibrillation 57 ischemic colitis 57 valvular heart disease 57 persistent pulmonary hypertension 57 extracorporeal membrane oxygenation ECMO 57 lower extremity 57 limb salvage 57 ruptured uterus 57 liver resection 57 perioperative morbidity 57 ureteric 57 Compartment syndrome 57 lumbar degenerative 57 connective tissue disorders 57 lumbar fusions 57 mycotic 57 ELBW infants 57 cholestasis 57 ulnar neuropathy 57 myoma 57 balloon valvuloplasty 57 bile duct cancers 57 Adhesions 57 rheumatologic 57 menstrual disorders 57 ischemic mitral regurgitation 57 temporal lobectomy 57 spinal epidural 57 lumbar stenosis 57 arteriovenous fistula 57 nephron sparing surgery 57 septal defects 57 amniotic fluid embolism 57 subarachnoid haemorrhage 57 percutaneous transluminal coronary angioplasty 57 malposition 57 calculi 57 Bankart lesion 57 thromboembolic 57 subdural hematomas 57 ectopia cordis 57 pyloric stenosis 57 periprosthetic fractures 57 nonoperative 57 Ponseti method 57 donor nephrectomy 57 hemiplegic cerebral palsy 57 breech births 57 laparoscopic fundoplication 57 distal radial fractures 57 facial malformations 57 neurologic outcomes 57 vertebral subluxations 57 cataract extraction 57 breast abscesses 57 membrane rupture 57 partial meniscectomy 57 coronary artery bypass grafts 57 bowel obstructions 57 vasospasm 57 congenital cataract 57 epiphyseal 57 Pulmonary embolism 57 untreated celiac disease 57 pain syndromes 57 Septic arthritis 57 idiopathic pulmonary 57 vertebral subluxation 57 osteochondroma 57 esophageal resection 57 spondylolysis 57 epiphysis 57 otoplasty 57 patellofemoral pain 57 ACL ruptures 57 osteopathic manipulation 57 postoperative morbidity 57 hypertrophic scars 57 thrombotic complications 57 scaphoid fractures 57 aneurysm rupture 57 caesarean section births 57 acetabular fractures 57 postoperative hemorrhage 57 Lyme arthritis 57 Spina bifida 56 distraction osteogenesis 56 preterm infant 56 neonatal jaundice 56 antireflux surgery 56 arthroscopies 56 myomas 56 PAGCL 56 hematomas 56 upper gastrointestinal bleeding 56 thoracic aortic disease 56 abdominal aortic 56 recurrent miscarriage 56 navicular disease 56 laparoscopic technique 56 pathologic fracture 56 preterm deliveries 56 spinal manipulation 56 nerve entrapment 56 chronic venous insufficiency 56 chiropractic adjustment 56 mitral valve regurgitation 56 congenital abnormality 56 pneumonia septicemia 56 subdural 56 orchitis 56 disc herniations 56 gastroesophageal reflux 56 neurosurgical procedures 56 intra abdominal abscess 56 arthroplasties 56 acetabular fracture 56 nonunions 56 vesicoureteral reflux 56 pulmonary contusions 56 hypermobility 56 mitral stenosis 56 etiologic factors 56 malignant hyperthermia 56 CHDs 56 chiropractic manipulation 56 hyperbilirubinemia 56 rheumatic arthritis 56 polycystic ovarian disease 56 prenatally diagnosed 56 supratentorial 56 thoracic surgeries 56 chondrolysis 56 subdural hemorrhages 56 tracheal stenosis 56 spondylolisthesis 56 subdural bleeding 56 proximal radius 56 diaphragmatic hernia 56 reinterventions 56 decompressive craniectomy 56 intramedullary nails 56 bicuspid aortic valves 56 nerve palsy 56 related bloodstream infections 56 keloid 56 meniscal tear 56 lacunar 56 airway obstructions 56 corticosteroid injection 56 popliteal artery 56 atrial tachyarrhythmias 56 malunion 56 underwent coronary angiography 56 Candida infection 56 thrombophlebitis 56 hemolytic disease 56 hyperprolactinemia 56 pseudoaneurysms 56 tenotomy 56 osteoid 56 valvular 56 catheterisation 56 intracerebral 56 polyhydramnios 56 endovascular coiling 56 temporomandibular joint TMJ 56 ovarian hyperstimulation syndrome 56 arterial blockage 56 distal femoral 56 Charcot foot 56 arterial grafts 56 diagnostic angiography 56 intracerebral haemorrhage 56 Complication rates 56 Eclampsia 56 benign paroxysmal positional vertigo 56 L5 S1 56 tibial shaft 56 gynecologic procedures 56 VUR 56 submandibular gland 56 recurrent DVT 56 site infections SSIs 56 hepatobiliary 56 vertebral compression fracture 56 antibiotic prophylaxis 56 repigmentation 56 strangulated hernia 56 suprapubic 56 common bile duct 56 tendinopathy 56 Oral mucositis 56 radioiodine therapy 56 placental abruption 56 painful vertebral compression 56 mesenteric ischemia 56 hydatid disease 56 orofacial 56 pulmonary stenosis 56 aortic coarctation 56 Spinal cord 56 fundoplication 56 artery bypass 56 venous thromboembolic disease 56 lichen planus 56 obstructive sleep 56 ovarian malignancy 56 neurogenic bladder 56 dermoid 56 thrombophilia 56 acute renal 56 surgeons orthopedic surgeons 56 reduction mammoplasty 56 hypertrophic scarring 56 hemodynamically stable 56 Coronary artery bypass 56 epidural abscess 56 chronic pelvic 56 bone deformities 56 agenesis 56 posterior cervical 56 thoracoscopic lobectomy 56 contra lateral 56 myelopathy 56 dental abscess 56 post partum hemorrhage 56 lung resection 56 rectal prolapse 56 nodular lesions 56 aortic insufficiency 56 Minimally invasive surgery 56 mitral valve replacement 56 pediatric orthopedic 56 hallux rigidus 56 tubal reversal 56 gynecological surgeries 56 Sleep disordered breathing 56 skeletally immature 56 heterotopic ossification 56 ruptured ectopic pregnancy 56 urological procedures 56 tibial tubercle 56 enlarged adenoids 56 gastro intestinal bleeding 56 morbidities 56 embolizations 56 lumbar spinal stenosis 56 upper thoracic spine 56 primary aldosteronism 56 diskectomy 56 neurodevelopmental outcomes 56 pituitary tumors 56 fragility fractures 56 Arteriovenous Malformation 56 phimosis 56 hypertrophic cardiomyopathy HCM 56 renal agenesis 56 gastroduodenal 56 metabolic abnormality 56 herpetic 56 hepatorenal syndrome 56 spontaneous preterm births 56 Hip dysplasia 56 bony metastases 56 Cardiac catheterization 56 scalp lacerations 56 cardiovascular metabolic diseases 56 laparoscopic appendectomy 55 symptomatic aortic stenosis 55 cervical lymph nodes 55 stenoses 55 PFPS 55 erythema nodosum 55 congenital diaphragmatic hernia 55 pericardial effusions 55 rotator cuff tears 55 fragility fracture 55 decompensated cirrhosis 55 diaphyseal 55 aortic dissections 55 bone grafting procedures 55 sacral agenesis 55 endophthalmitis 55 connective tissue diseases 55 arterial fibrillation 55 interrupted aortic arch 55 intracranial 55 subdural haemorrhage 55 valvular disease 55 disc degeneration 55 Diabetic neuropathy 55 podiatric physician 55 distal radius fracture 55 cavernous sinus 55 incomplete revascularization 55 pediatric orthopedics 55 endotracheal intubation 55 hepatectomy 55 joint contractures 55 unblock clogged arteries 55 vasogenic edema 55 noncancerous tumor 55 orthopedics neurosurgery 55 osteoarthritic 55 RSV infections 55 skeletal malformations 55 patellofemoral 55 respiratory gastrointestinal 55 wide necked aneurysms 55 amenorrhoea 55 unruptured aneurysms 55 bronchogenic carcinoma 55 sternal closure 55 recanalization 55 Arteriovenous 55 cytoreductive surgery 55 pancreatic resection 55 intracerebral hemorrhage ICH 55 intrapartum 55 neonatal respiratory distress 55 SIADH 55 sonographic evaluation 55 vascular anatomy 55 congenital anomalies 55 ligament laxity 55 Raynaud phenomenon 55 TMJ syndrome 55 needle punctures 55 anaesthesiology 55 sternotomy 55 nulliparous women 55 renovascular hypertension 55 severe asthma exacerbations 55 orthopedics cardiology 55 renal transplants 55 preoperative diagnosis 55 necrotizing 55 malalignment 55 microvascular dysfunction 55 mental retardation blindness 55 reflux disease 55 uncontrolled bleeding 55 arthrography 55 craniofacial surgery 55 corticosteroid induced 55 hammertoe 55 neovascularisation 55 edema swelling 55 cerebral vascular 55 Peripheral neuropathy 55 Y Gastric Bypass 55 thoracic 55 chronic prostatitis 55 nerve decompression 55 functional mitral regurgitation 55 ovarian hyperstimulation syndrome OHSS 55 perfusion defects 55 occlusive disease 55 Fibrous Dysplasia 55 cervical thoracic 55 periprosthetic infection 55 chronic rhinosinusitis 55 thyroid hormone deficiency 55 Meningiomas 55 ureteroscopy 55 glucocorticoid therapy 55 neurovascular diseases 55 postoperative mortality 55 surgical revascularization 55 disc prolapse 55 swelling stiffness 55 nonsurgical treatments 55 epicondylitis 55 urologic diseases 55 cystic fibrosis chronic pancreatitis 55 phrenic nerve 55 hernias 55 ischemic vascular 55 intra articular 55 congenital defects 55 empyema 55 atypical fractures 55 hyperhydrosis 55 incisional hernia 55 mediastinitis 55 hemodynamic instability 55 pulmonary thromboembolism 55 brain hemorrhages 55 perforated appendicitis 55 Prostatitis 55 pleural effusion 55 patients undergoing CABG 55 fluid overload 55 anal canal 55 intra uterine 55 cerebral hemorrhaging 55 optic nerve sheath 55 revascularization procedures 55 pancreatectomy 55 prostate bladder 55 congenital disorders 55 subtrochanteric 55 neurosensory 55 ecchymosis 55 epidural anesthesia 55 dystocia 55 sacroiliac joints 55 removed laparoscopically 55 anal sphincter 55 lobar 55 Hurler syndrome 55 meningeal 55 thoracic aneurysms 55 Vertebral compression fractures 55 diagnostic laparoscopy 55 oesophageal 55 caesarian sections 55 coronary stenoses 55 excisional 55 anterior pelvic 55 extracranial 55 venous stasis ulcers 55 ICD shocks 55 contracture 55 Thrombolytic therapy 55 vaginal vault 55 nephrolithiasis 55 Liver transplantation 55 microkeratome blade 55 limb lengthening 55 Hemorrhagic strokes 55 resection arthroplasty 55 fractures lacerations 55 needle aspiration 55 distal radius fractures 55 osteochondral lesions 55 cervical fusion 55 fetal malformations 55 debilitating complication 55 neurologic diseases 55 atrophic gastritis 55 disseminated intravascular coagulation DIC 55 rebleeding 55 cardioplegic arrest 55 esophagitis 55 urinary stones 55 talar dome 55 renal tumors 55 mastoiditis 55 vascular insufficiency 55 LAGB 55 ruptured brain aneurysms 55 superficial vein thrombosis 55 ankle arthrodesis 55 dysgenesis 55 total knee arthroplasties 55 thoracic surgeons 55 intravenous bisphosphonates 55 percutaneous interventions 55 obstructive jaundice 55 voiding dysfunction 55 Aortic aneurysms 55 hemodynamically unstable 55 infraspinatus 55 cranial radiation 55 ectasia 55 total knee arthroplasty 55 cranial facial 55 lumbar spinal stenosis LSS 55 nephrectomies 55 recurrent dislocation 55 lung biopsies 55 gastro esophageal reflux 55 abdominal pelvic 55 prostate TURP 55 fibroids endometriosis 55 sympathectomy 55 cartilage degeneration 55 perforated intestine 55 spinal bifida 55 malpositioned 55 epiglottitis 55 detrusor overactivity 55 testicular tumors 55 rheumatic disease 55 heterotopic bone 55 post operatively 55 cancerdefine 55 intertrochanteric fractures 55 perineal 55 retropubic 55 pre operatively 55 intra articular fractures 55 Morton Neuroma 55 gross hematuria 55 pituitary adenoma 55 ovulation induction 55 cesarean delivery 55 Caesarian sections 55 gall bladder stones 55 sonographic findings 55 thyroid deficiency 55 untreated OSA 55 calcaneal 55 T1DM 55 axillary lymph node dissection 55 basilar artery 55 Pressure ulcers 55 adenomyosis 55 musculoskeletal diseases 55 ovarian cysts 55 adolescent idiopathic scoliosis 55 bowel perforation 55 intertrochanteric 54 cervical myelopathy 54 acid suppressive medications 54 uterine abnormalities 54 gastrointestinal bleeds 54 performed laparoscopically 54 Erb Palsy 54 pulmonary artery hypertension 54 severe mitral regurgitation 54 frenulum 54 Mitral valve 54 spontaneous vaginal 54 malabsorptive 54 thrombolytic agents 54 splenic 54 epidural steroid injection 54 Balloon kyphoplasty 54 revascularization procedure 54 cerebral infarction 54 dysmotility 54 Fontan procedure 54 gynaecomastia 54 denervation 54 sinus tarsi 54 neurocysticercosis 54 laparascopic 54 osteochondritis dissecans 54 venous blood clots 54 neurodevelopmental disabilities 54 malformation 54 vWD 54 immunocompetent 54 atherothrombosis 54 hysterectomies performed 54 oropharyngeal 54 Caesarean deliveries 54 degloving 54 coagulopathy 54 aneurysmal 54 neuromusculoskeletal 54 gynaecologic 54 lobar pneumonia 54 Alagille syndrome 54 uterine scar 54 lumbar disc herniation 54 periarticular 54 bone allografts 54 renal transplantation 54 vascular abnormality 54 temporal arteritis 54 ostomy surgery 54 imperforate anus 54 ureteral obstruction 54 intestinal ulcers 54 skeletal abnormalities 54 basal cell cancers 54 stenting procedures 54 Hallux valgus 54 thoracic aorta 54 discoid lupus 54 decubitus ulcer 54 aortic arch 54 treat brain aneurysms 54 distal biceps tendon 54 Oesophageal 54 cleft palette 54 acute hepatic 54 nonmelanoma skin cancers 54 neurologically impaired 54 atypical femur fractures 54 ureteral stents 54 subcutaneous tissues 54 craniofacial anomalies 54 HLHS 54 Nasal polyps 54 retroperitoneal 54 enterocolitis 54 LVNC 54 avulsion fractures 54 developmental dysplasia 54 meniscus tears 54 chronic GVHD 54 lethal arrhythmias 54 adenomatous 54 resections 54 nonvertebral fracture 54 arterial dissection 54 abdominal aneurysms 54 anastomoses 54 Ileus 54 ptosis 54 cartilage lesions 54 spinal disorders 54 arteriography 54 vascular abnormalities 54 septic arthritis 54 cystoid macular edema 54 peripartum cardiomyopathy 54 pa tients 54 urate crystals 54 neurologic symptoms 54 transection 54 noncancerous growths 54 malignant neoplasms 54 intra abdominal 54 acute abdominal pain