Appendicitis Diagnosis Using Rovsing Sign

Clinical Context

Right lower quadrant pain is a symptom of appendicitis, often evaluated alongside other clinical signs and symptoms, including abdominal rigidity and fever and leukocytosis, as recommended by clinical guidelines from Praxis Medical Insights 1
The stage of appendicitis, such as early vs. perforated, can affect the accuracy and reliability of Rovsing sign, according to Praxis Medical Insights 1

Laboratory studies, such as white blood cell count, are recommended as part of a comprehensive evaluation for appendicitis, in addition to clinical assessment and imaging studies, as suggested by Praxis Medical Insights 1
Imaging studies, including ultrasound, CT scan, and MRI, are recommended to confirm the diagnosis of appendicitis when Rovsing sign is positive, as per guidelines from the Journal of the American College of Radiology 2, 3

Ultrasound is recommended as first-line imaging for suspected appendicitis, with CT scan without oral contrast having high sensitivity and specificity for appendicitis diagnosis, as reported by the Journal of the American College of Radiology 2, 4
MRI shows excellent diagnostic performance with high sensitivity and specificity for appendicitis diagnosis, according to the Journal of the American College of Radiology 2

The American College of Radiology recommends CT scan without oral contrast as the preferred imaging modality in adults, with sensitivity of 90-100% and specificity of 94.8-100% for diagnosing appendicitis in patients with right lower quadrant pain and a positive Rovsing sign 5
The American College of Radiology suggests MRI as a useful diagnostic tool, particularly in pregnant patients, with 96% sensitivity and specificity for diagnosing appendicitis 6

The presence of a positive Obturator sign, characterized by pain with internal rotation of the flexed hip, suggests pelvic appendix and can aid in the diagnosis of appendicitis 6
The Murphy sign, characterized by inspiratory arrest during right upper quadrant palpation, is specific for cholecystitis and can help distinguish it from appendicitis 6
The McBurney sign, characterized by direct tenderness at McBurney's point, is a clinical finding that can aid in the diagnosis of appendicitis 6

The American College of Radiology recommends using Murphy's sign, characterized by inspiratory arrest during deep palpation of the right upper quadrant, to diagnose acute cholecystitis, with a positive sign occurring when the descending inflamed gallbladder contacts the examiner's hand, causing sudden pain and cessation of inspiration 7, 8
McBurney's point, located approximately one-third the distance from the anterior superior iliac spine to the umbilicus, is the typical anatomical location of the appendix, and tenderness at this point is a key finding for acute appendicitis 9
Rovsing's sign, which occurs when palpation of the left lower quadrant elicits pain in the right lower quadrant, is based on the principle that pressure in the left colon displaces gas and fluid, causing peritoneal irritation at the inflamed appendix location 8

The American College of Radiology and Clinical Infectious Diseases recommend a comprehensive physical examination approach, including characteristic abdominal pain, localized abdominal tenderness, and laboratory evidence of acute inflammation, to identify patients with appendicitis 8, 10
The Annals of Emergency Medicine suggests using clinical findings to risk-stratify patients and guide decisions about further testing and management, and recommends against relying on physical examination alone for diagnosis 11
The Journal of the American College of Radiology recommends using helical CT of the abdomen and pelvis with intravenous contrast as the imaging procedure of choice for adults with suspected appendicitis, with sensitivity of 85.7-100% and specificity of 94.8-100% 8, 9

The American College of Surgeons recommends considering appendicitis in patients with periumbilical pain migrating to the right lower quadrant, right lower quadrant tenderness with guarding, anorexia/nausea/vomiting, and fever, though this complete triad is present in only a minority of patients 12, 13
The World Journal of Emergency Surgery suggests that periumbilical pain that migrates to the right lower quadrant is one of the strongest discriminators for appendicitis in adults 13
Anorexia, nausea, and intermittent vomiting are classic associated symptoms 13
Low-grade fever is present, though reported rates vary from 30% to 80% in different populations 12, 13

The American Geriatrics Society notes that the typical triad of migrating right lower quadrant pain, fever, and leukocytosis is infrequently observed in elderly patients 12, 13
Signs of peritonitis are more common in elderly patients, including abdominal distension, generalized tenderness and guarding, rebound tenderness, and palpable abdominal mass 12, 13, 14
Comorbidities and concurrent medications may mask or complicate the clinical presentation in elderly patients 12, 13

The World Journal of Emergency Surgery recommends considering leukocytosis (elevated white blood cell count) as a common but not diagnostic finding on its own 12, 13
Elevated C-reactive protein (CRP) is frequently present; when two or more inflammatory variables are increased, appendicitis is likely 13, 15
Normal inflammatory markers have high negative predictive value (100% in some studies) for excluding appendicitis 12, 13

The American College of Radiology suggests that appendiceal diameter ≥7 mm (some studies use 8.2-8.5 mm cutoff) is a significant finding 16
Presence of appendicoliths/fecaliths predicts perforation with odds ratio of 2.47-2.67 16
CT has sensitivity of 90-100% and specificity of 94.8-100% for diagnosing appendicitis 17
Ultrasound has average sensitivity of 87.1% and specificity of 89.2%, though visualization rates vary (35-65%) 17, 18
MRI demonstrates 96% sensitivity and 96% specificity for appendicitis diagnosis 17, 19

The American College of Emergency Physicians recommends not relying on clinical signs and symptoms alone for diagnosis, especially in elderly patients—imaging is essential 12, 13, 15
Scoring systems (Alvarado score) are useful for excluding appendicitis (low scores) but should not be used alone for diagnosis 12, 13, 14
Atypical presentations occur in approximately 50% of patients, requiring lower threshold for imaging 20
Female patients of childbearing age have more atypical presentations and lower diagnostic accuracy on ultrasound (false-positive rate 35.5% vs 6.2% in men) 18
Obesity significantly reduces diagnostic accuracy of ultrasound, with false diagnosis rates of 34.4% in obese men vs 6.2% in non-obese men 18
Delayed presentation increases perforation risk—elderly patients typically present later with higher perforation rates 12, 13