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Pulmonary Emboli
Pulmonary Stenosis
Pulmonary Tuberculosis
Pulsus Alternans in a Patient with Severe Lv Systolic Dysfunction
Pulsus Paradoxus in a Patient with Cardiac Tamponade
Radiation-Induced Pulmonary Fibrosis
Radiograph of the Left Thumb Shows Loss of the Joint Space Between the Proximal Thumb Metacarpal and the Trapezium Bone
Radiograph of the Lumbar Spine of a Different Patient, Demonstrating Shiny Corners (Romanus Lesions) (Arrows)
Radiograph Shows Two Dense 1-cm Calcifications (Arrows) Projecting over the Mid-Portion of the Left Kidney Consistent with Kidney Stones
Radiographs of Index Finger of a Patient before (Left) and after (Right) Plasma Phosphate Was Reduced to Normal with Aluminum Hydroxide Gel and 6 Months of Dialysis Against a Bath of 8 mg/dL Calcium
Rash of Hand, Foot, and Mouth Disease
Raynaud Phenomenon of the Hands Characterized by Paroxysmal Bilateral Digital Pallor and Cyanosis Followed by Rubor; Early in Attacks, Only One or Two Fingertips May be Affected but as It Progresses, All Fingers Down to the Distal Palm May be Involved
Relationship of CD4 Count to Development of Opportunistic Infections
Relative Afferent Pupillary Defect
Renal Stones
Representative Spirograms (Upper Panel) and Expiratory Flow-Volume Curves (Lower Panel) for Normal (A), Obstructive (B), and Restrictive (C) Patterns
Rest and 24-Hour Redistribution Thallium-201 (201tl) Single-Photon Emission CT (Spect) Myocardial Perfusion Imaging (Mpi) of a 75-Year-Old Man with Atypical Angina Showing a Large Amount of Resting Ischemia in the Left Anterior Descending Coronary Artery (LAD)
Retinal Changes in HIV Infection: Cytomegalovirus Retinitis with Hemorrhages and Retinal Whitening
Retinal Embolus (Arrow)
Rheumatoid Arthritis
Rheumatoid Nodules over the Extensor Surface of the Forearm
RBC Cast
Receiver Operator Characteristic (ROC) Curves for PSA and Prostatic Acid Phosphatase (PAP) in the Diagnosis of Prostate Cancer
Rectocele (Also Known as Posterior Vaginal Prolapse), (A
Recurrent Oral Aphthous Stomatitis
Refractory (Clonal) Anemia with Ringed Sideroblasts
Relationship Between Accuracy and Precision in Diagnostic Tests
Right Atrial Enlargement (Rae) and Rvh
Right Bundle Branch Block
Risk Index for Material Cardiac Complications in Pregnancy (Carpreg II)
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