Le
Lead
blood levels of
Health Supervision of the Well Child: Blood tests
nephrotoxicity of
Heavy Metal Nephropathy: Lead
poisoning with
Oral Findings in Systemic Disorders Guidelines for Chelation Therapy Lead Poisoning Symptoms and Treatment of Specific Poisons
Lead encephalopathy
Cerebrospinal Fluid Abnormalities in Various Disorders
Lead-pipe rigidity
Approach to the Neurologic Patient: Motor system
Learning disabilities
Overview of Learning Disabilities Common Learning Disabilities
in adolescents
Approach to the Care of Adolescents: Psychosocial Disorders
attention-deficit/hyperactivity disorder and
Learning and Developmental Disorders: Symptoms and Signs
Leber hereditary optic neuropathy (LHON)
Hereditary Optic Neuropathies: Leber hereditary optic neuropathy
Leber's hereditary optic neuropathy (LHON)
Mitochondrial Oxidative Phosphorylation Disorders: Leber's hereditary optic neuropathy (LHON) Mitochondrial Disorders
Lecithin-cholesterol acyl transferase
Major Apoproteins and Enzymes Important to Lipid Metabolism Lipid Disorders: Endogenous lipid metabolism
deficiency of
Genetic (Primary) Dyslipidemias
Leflunomide
Leflunomide in rheumatoid arthritis
Other Drugs Used to Treat Rheumatoid Arthritis Rheumatoid Arthritis (RA): Traditional disease-modifying antirheumatic drugs (DMARDs)
Le Fort classification
Fractures of the Jaw and Contiguous Structures Le Fort classification of midface fractures.
Left bundle branch block
Bundle Branch and Fascicular Block Left bundle branch block.
Left ventricular assist device
Heart Failure: Device therapy
Left ventricular dysfunction
see also Heart failure
Left ventricular end-diastolic pressure
Normal Pressures in the Heart and Great Vessels Monitoring and Testing the Critical Care Patient: Pulmonary artery occlusion pressure (PAOP) Heart Failure: Physiology Frank-Starling principle.
Leg(s)
amputation of
Peripheral Arterial Disease: Surgery Leg Amputation Rehabilitation
prosthetics for
Limb Prosthetics Types of prostheses. Options for Prostheses
cellulitis of
Cellulitis Differentiating Cellulitis and Deep Venous Thrombosis
claudication in
Peripheral Arterial Disease: Symptoms and Signs Peripheral Arterial Disease: Treatment
cutaneous nerves of
Cutaneous nerve distribution: lower limb.
edema of
Foot Manifestations of Systemic Disorders Cardiovascular Examination: Extremities Peripheral Venous Disorders: Symptoms and Signs Chronic Venous Insufficiency and Postphlebitic Syndrome: Symptoms and Signs
during pregnancy
Lower-Extremity Edema During Late Pregnancy Some Causes of Edema During Late Pregnancy Some Findings That Suggest Preeclampsia
examination of
Cardiovascular Examination: Extremities
hereditary spastic paraparesis of
Hereditary Spastic Paraparesis
nocturnal cramps of
Parasomnias: Sleep-related leg cramps
pain in
Sciatica
chronic venous insufficiency and
Chronic Venous Insufficiency and Postphlebitic Syndrome: Symptoms and Signs
peripheral vascular disease in
see Peripheral vascular disorders
prosthetic
Therapeutic and Assistive Devices Leg Amputation Rehabilitation Leg Amputation Rehabilitation: Stump Conditioning and Prostheses
restless
Some Causes of Insomnia and Excessive Daytime Sleepiness Periodic Limb Movement Disorder and Restless Legs Syndrome
shin splints in
Shin Splints
stasis dermatitis of
Stasis Dermatitis
Legal issues
Medicolegal Issues
disclosure
Confidentiality and HIPAA: Confidential communications
do-not-resuscitate order
Do-Not-Resuscitate (DNR) Orders and Physician Orders for Life-Sustaining Treatment (POLST)
dying patient and
Other Concerns Related to Dying: Legal and ethical concerns
psychiatric treatment and
Behavioral Emergencies: Legal Considerations
Legg-Calvé-Perthes disease
Osteochondroses: Legg-Calvé-Perthes Disease Examination for Some Commonly Missed Injuries
Legionella infection
Community-Acquired Pneumonia Community-Acquired Pneumonia in Adults Community-Acquired Pneumonia: Pathogens Community-Acquired Pneumonia: Prognosis Selective Media for Isolation of Common Bacteria Legionella Infections
phagocytosis in
Factors Facilitating Microbial Invasion: Other factors
Legionnaires' disease
Legionella Infections: Symptoms and Signs
cramps of
Muscle Cramps: Causes Some Drugs and Disorders Associated With Muscle Cramps
Leigh disease
Mitochondrial Oxidative Phosphorylation Disorders: Neurogenic muscle atrophy and retinitis pigmentosa (NARP) and Leigh disease
Leiomyoma
esophageal
Tumors of the GI Tract
small-bowel
Small-Bowel Tumors
Leishmaniasis
Selected Diseases or Organisms Associated With Liver Inflammation Collecting and Handling Specimens for Microscopic Diagnosis of Parasitic Infections Collecting and Handling Specimens for Microscopic Diagnosis of Parasitic Infections Serologic and Molecular Tests for Parasitic Infections Leishmaniasis
Lemierre syndrome
Peripheral Venous Disorders: Complications Retropharyngeal Abscess
Lenalidomide
Multiple Myeloma: Treatment of malignant cells
Lennox-Gastaut syndrome
Seizure Disorders: Generalized seizures
Lens
see also Contact lenses
Evaluation of the Ophthalmologic Patient: Ophthalmoscopy
implantof
Refractive Surgery: Phakic Intraocular Lenses (IOLs)
opacity of
Cataract
subluxation of
Marfan Syndrome: Ocular system
Lensectomy
Refractive Surgery: Clear Lensectomy
Lenticulostriate arteries
Arteries of the brain.
Lentigines
Hyperpigmentation: Lentigines Classification of Moles
Lentigo maligna melanoma
Melanoma: Lentigo maligna melanoma Melanoma: Treatment
Leopard syndrome
Hyperpigmentation: Lentigines
Leopold maneuvers
Leopold maneuver.
Lepirudin
Pulmonary Embolism: Drugs Some Anticoagulation Options Other Than Heparin in Thromboembolic Disease
Leprosy
hypercalcemia and
Hypercalcemia: Pathophysiology
Leptin
Pathways Regulating Food Intake
Leptospirosis
Selected Diseases or Organisms Associated With Liver Inflammation Selective Media for Isolation of Common Bacteria Leptospirosis
Leriche syndrome
Abdominal Aortic Branch Occlusion: Symptoms and Signs Peripheral Arterial Disease: Symptoms and Signs
Lesch-Nyhan syndrome
Gout: Pathophysiology Neurologic Disorders in Children: Diagnosis Disorders of Purine and Pyrimidine Metabolism Purine and Pyrimidine Metabolism Disorders: Disorders of Purine Salvage
Leser-Trélat sign
Skin Manifestations of Internal Disease: Internal cancer Paraneoplastic Syndromes: Cutaneous paraneoplastic syndromes
LET (lidocaine, epinephrine, tetracaine)
Lacerations: Local anesthesia
Letdown reflex
Principles of Endocrinology: Oxytocin
Letrozole
Commonly Used Antineoplastic Drugs Breast Cancer: Adjuvant systemic therapy Ovulatory Dysfunction: Treatment
Letterer-Siwe disease
see also Langerhans' cell histiocytosis (granulomatosis) Tumors of Bones and Joints: Characteristic findings Langerhans' Cell Histiocytosis: Letterer-Siwe disease
Leucine
Nutrition: General Considerations: Proteins
Leucovorin
Congenital Toxoplasmosis: Treatment
Leu-enkephalin
Neurotransmission: Endorphins and enkephalins
Leukapheresis
Therapeutic Apheresis: Cytapheresis
Leukemia
Leukemias
acute
Findings at Diagnosis in the Most Common Leukemias Acute Leukemia
antilymphocyte serum in
Immunotherapy of Cancer: Passive Humoral Immunotherapy
chronic
Findings at Diagnosis in the Most Common Leukemias Chronic Leukemia Clinical Staging of Chronic Lymphocytic Leukemia
classification of
French-American-British (FAB) Classification of Acute Leukemias Leukemias: Classification
cytapheresis in
dental procedures in
Systemic Disorders and the Mouth: Hematologic disorders
fever in
Some Causes of FUO
gingivitis in
Gingivitis: Symptoms and Signs
granulocytic
Findings at Diagnosis in the Most Common Leukemias Chronic Leukemia: Chronic Myelocytic Leukemia (CML)
hairy cell
Chronic Leukemia: Pathophysiology
liver in
Metastatic Liver Cancer: Hematologic Cancers and the Liver
lymphocytic (lymphoblastic)
French-American-British (FAB) Classification of Acute Leukemias Findings at Diagnosis in the Most Common Leukemias Acute Leukemia: Acute Lymphocytic Leukemia (ALL) Immunotherapy of Cancer: Active Specific Immunotherapy
Chronic Leukemia: Chronic Lymphocytic Leukemia (CLL) Clinical Staging of Chronic Lymphocytic Leukemia
lymphoma
Chronic Leukemia: Pathophysiology Chronic Leukemia: Chemotherapy
mast cell
Mastocytosis: Systemic mastocytosis
myeloblastic
Immunotherapy of Cancer: Active Specific Immunotherapy
myelocytic (myelogenous, myeloid)
French-American-British (FAB) Classification of Acute Leukemias
Findings at Diagnosis in the Most Common Leukemias Acute Leukemia: Acute Myelocytic Leukemia (AML)
Chronic Leukemia: Chronic Myelocytic Leukemia (CML)
pseudohypokalemia in
Overview of Disorders of Potassium Concentration: False K concentrations
myelomonocytic
Myelodysplastic Syndrome Myelodysplastic Syndrome Bone Marrow Findings and Survival
non-Hodgkin lymphoma vs
Non-Hodgkin Lymphomas: Pathophysiology
orbital extension of
Tumors of the Orbit: Children
pneumonia with
Pneumonia in Immunocompromised Patients
pregnancy and
Cancer in Pregnancy: Leukemia and Hodgkin lymphoma
promyelocytic
Acute Leukemia: Acute Myelocytic Leukemia (AML)
Leukemoid reaction
Leukemias: Classification
Leukocyte adhesion deficiency
Primary Immunodeficiency Disorders Characteristic Clinical Findings in Some Primary Immunodeficiency Disorders Leukocyte Adhesion Deficiency
Leukocyte alkaline phosphatase score
Findings at Diagnosis in the Most Common Leukemias Chronic Leukemia: Diagnosis
Leukocyte esterase test
Bacterial Urinary Tract Infections: Urine testing Distribution of Test Results of a Hypothetical Leukocyte Esterase Test in a Cohort of 1000 Women With an Assumed 30% Prevalence of UTI Distribution of Test Results of a Hypothetical Leukocyte Esterase Test in a Cohort of 1000 Women With an Assumed 5% Prevalence of UTI Interpretation of a Hypothetical Leukocyte Esterase (LE) Test Result in a Cohort of 1000 Women Assuming a 30% Prevalence of UTI (Pre-Test Probability), Test Sensitivity 71%, and Specificity 85%*
in children
Urinary Tract Infection in Children (UTI): Urine tests
Leukocytes
see White blood cells
Leukocytoclastic vasculitis
Cutaneous Vasculitis
Leukocytosis
Approach to the Patient With Suspected Immunodeficiency: Initial testing
Leukodystrophy
metachromatic
Lysosomal Storage Disorders Lysosomal Storage Disorders: Metachromatic Leukodystrophy
Leukoencephalopathy
multifocal
Progressive Multifocal Leukoencephalopathy (PML)
Leukomalacia
Premature Infant: CNS
Leukonychia partialis
Kawasaki Disease (KD): Symptoms and Signs
Leukopenia
see also Neutropenia Neutropenia and Lymphocytopenia
cancer therapy and
Management of Adverse Effects of Cancer Therapy: Cytopenias
sarcoidosis and
Systemic Involvement in Sarcoidosis
SLE and
Systemic Lupus Erythematosus (SLE): Hematologic manifestations
Leukoplakia
Oral Squamous Cell Carcinoma: Symptoms and Signs Evaluation of the Dental Patient: Physical examination Oral Growths: Dysplastic changes
HIV and
Common Manifestations of HIV Infection by Organ System
Leukotriene modifiers
Drug Treatment of Chronic Asthma* Asthma and Related Disorders: Drug therapy Allergic, Autoimmune, and Other Hypersensitivity Disorders: Anti-inflammatory drugs
Leuprolide acetate
Commonly Used Antineoplastic Drugs
in endometriosis
Drugs Used to Treat Endometriosis
in prostate cancer
Prostate Cancer: Palliative therapies
in uterine fibroids
Uterine Fibroids: Drugs
Levalbuterol
Drug Treatment of Chronic Asthma* Drug Treatment of Asthma Exacerbations*
Levator syndrome
Levator Syndrome
Levetiracetam
Drugs Used in Seizure Disordersa
in pregnancy
Some Drugs With Adverse Effects During Pregnancy
Levin tube
GI Procedures for the Generalist: Nasogastric or Intestinal Intubation
Levobetaxolol
Drugs Used to Treat Glaucoma
Levobunolol
Levocetirizine
Oral H1 Blockers
Levodopa
Examples of Disorders Associated With Defects in Neurotransmission
in elderly
Effect of Aging on Drug Metabolism* and Elimination Effect of Aging on Drug Response Drug-Disease Interactions in the Elderly Drug-Disease Interactions in the Elderly Drug Categories of Concern in the Elderly: Antiparkinsonian drugs
in multiple system atrophy
Multiple System Atrophy: Treatment
in Parkinson disease
Parkinson Disease: Levodopa Some Commonly Used Oral Antiparkinsonian Drugs
vitamin B6 deficiency and
Potential Vitamin-Drug Interactions
Levodopa test
Hypopituitarism in Children Resulting in Short Stature: Diagnosis
Levofloxacin
Usual Doses of Commonly Prescribed Antibiotics Fluoroquinolones Fluoroquinolones Some Clinical Uses of Fluoroquinolones Some Clinical Uses of Fluoroquinolones
in tuberculosis
Tuberculosis (TB): Second-line drugs
Levomethadyl acetate (LAAM)
Opioids: Maintenance
Levonordefrin
Systemic Disorders and the Mouth: Cardiovascular disorders
Levonorgestrel
Contraception: Emergency Contraception
Levorphanol
Opioid Analgesics Equianalgesic Doses of Opioid Analgesics*
Lewy bodies
Parkinson disease and
Lewy Body Dementia and Parkinson Disease Dementia Parkinson Disease: Pathophysiology
Lewy body dementia
Differences Between Alzheimer Disease and Lewy Body Dementia Lewy Body Dementia and Parkinson Disease Dementia
Leydig cells
Male Reproductive Endocrinology and Related Disorders: Physiology
aplasia of
Male Hypogonadism in Children: Primary