| M.D. profession |
| Macroamylasemia |
| Macrocephaly |
| Macrocytic achylic anemia |
| Macrocytic anemia |
| Macroglobulinemia – primary |
| Macroglobulinemia of Waldenstrom |
| Macroglossia |
| Macrophage |
| Macrosomia |
| Macula |
| Macula lutea |
| Macular degeneration |
| Macule |
| Magic markers |
| Magnesium – low |
| Magnesium in diet |
| Magnetic resonance angiography |
| Magnetic resonance imaging |
| Magnetic resonance imaging – abdomen |
| Magnetic resonance imaging – cardiac |
| Magnetic resonance imaging – chest |
| Magnetic resonance imaging – cranial |
| Magnetic resonance imaging – heart |
| Magnetic resonance imaging – lumbosacral spine |
| Magnetic resonance imaging – spine |
| Major depression |
| Major depression with psychotic features |
| Major depressive disorder |
| Malabsorption |
| Malaise |
| Malaria |
| Malathion poisoning |
| Male condoms |
| Male fertility test |
| Male pattern baldness |
| Male reproductive changes |
| Malignancy |
| Malignant hypertension |
| Malignant hyperthermia |
| Malignant malnutrition |
| Malignant melanoma – choroid |
| Malignant melanoma – eye |
| Malignant mesothelioma |
| Malignant otitis externa |
| Malignant plasmacytoma |
| Malignant teratoma |
| Malignant tumor |
| Mallory-Weiss tear |
| Malnutrition |
| Malocclusion of teeth |
| Malposition of the uterus |
| Malpresentations |
| Malta fever |
| Mammary dysplasia |
| Mammogram |
| Mammogram – calcifications |
| Mammogram – recommended age |
| Mammography |
| Mammoplasty |
| Mandibulofacial dysostosis |
| Manic depression |
| Maple syrup urine disease |
| Marfan syndrome |
| Margarine vs. butter |
| Marijuana intoxication |
| Marine animal stings or bites |
| Marker X syndrome |
| Maroteaux-Malamut |
| Marshall-Marchetti-Krantz operation |
| Martin-Bell syndrome |
| MAS |
| Mask of pregnancy |
| Mass |
| Mass in the abdomen |
| Mastalgia |
| Mastectomy |
| Mastitis |
| Mastocytoma |
| Mastocytosis |
| Mastodynia |
| Mastoidectomy |
| Mastoiditis |
| Mastopexy |
| Maternal blood loss |
| Maternal deprivation syndrome |
| Maternal drug abuse |
| Mathematics disorder |
| Matting acid poisoning |
| Maturation – sexual |
| Maxillofacial injury |
| McArdle syndrome |
| McCune-Albright syndrome |
| MCL injury |
| MD |
| Mean corpuscular hemoglobin (MCH) |
| Mean corpuscular hemoglobin concentration (MCHC) |
| Mean corpuscular volume (MCV) |
| Measles |
| Measles – mumps – rubella (MMR) vaccine |
| Meatal stenosis |
| Meballymal overdose |
| Mechanical ventilator – infants |
| Meckel’s diverticulum |
| Meckel’s diverticulectomy |
| Meclofenamate overdose |
| Meconium |
| Meconium aspiration syndrome |
| Medial |
| Medial collateral ligament (MCL) injury of the knee |
| Median nerve dysfunction |
| Mediastinal emphysema |
| Mediastinal tumor |
| Mediastinitis |
| Mediastinoscopy with biopsy |
| Medical emergencies – how to recognize them |
| Medications – how to get prescription filled |
| Medications for pain |
| Medications to have at home |
| Medicine storage |
| Mediterranean anemia |
| Medullary carcinoma of thyroid |
| Medullary cystic kidney disease |
| Medulloblastoma – adults |
| Medulloblastoma – children |
| Megaloblastic anemia |
| Megarectum |
| Mehlä hrschaden |
| Meibomian gland lipogranuloma |
| Meibomianitis |
| Melancholy |
| Melanin |
| Melanin – urine |
| Melanoma |
| Melanoma of the eye |
| Melasma |
| Melena |
| Mellaril overdose |
| Membranoproliferative glomerulonephritis (type I) |
| Membranoproliferative glomerulonephritis (type II) |
| Membranoproliferative GN I |
| Membranoproliferative GN II |
| Membranous glomerulonephritis |
| Membranous GN |
| Membranous nephropathy |
| Memory |
| Memory aids |
| Memory loss |
| MEN I |
| Menarche |
| Meniere’s disease |
| Meningioma – adults |
| Meningioma – children |
| Meningitis |
| Meningitis – cryptococcal |
| Meningitis – gram-negative |
| Meningitis – H. influenzae |
| Meningitis – meningococcal |
| Meningitis – pneumococcal |
| Meningitis – staphylococcal |
| Meningitis – syphilitic |
| Meningitis – tuberculous |
| Meningocele repair |
| Meningococcal bacteremia |
| Meningococcal blood poisoning |
| Meningococcal meningitis |
| Meningococcal septicemia |
| Meningococcemia |
| Meniscal allograft transplantation |
| Meniscus tears |
| Menkes kinky hair syndrome |
| Menkes syndrome |
| Menopause |
| Menorrhagia |
| Menstrual cramp relief |
| Menstrual cramps |
| Menstrual pain – adolescent |
| Menstrual periods – heavy, prolonged, or irregular |
| Menstrual periods and bloating |
| Menstruation – absent |
| Menstruation – painful |
| Mental retardation |
| Mental status – decreased |
| Mental status change |
| Mental status tests |
| Menthol and methyl-salicylate overdose |
| Menthol overdose |
| Mepergan forte overdose |
| Meperidine hydrochloride overdose |
| Meprobamate overdose |
| Merbromin overdose |
| Mercaptothion poisoning |
| Mercuric chloride |
| Mercuric oxide |
| Mercurochrome poisoning |
| Mercury |
| Merthiolate poisoning |
| Mesangiocapillary glomerulonephritis (type I) |
| Mesangiocapillary glomerulonephritis (type II) |
| Mesenteric arteriography |
| Mesenteric artery ischemia |
| Mesenteric Vascular Disease |
| Mesenteric venous thrombosis |
| Mesothelioma (benign-fibrous) |
| Mesothelioma (malignant) |
| Meta-iodobenzylguanidine scintiscan |
| Metabolic acidosis |
| Metabolic neuropathies |
| Metabolic panel 20 |
| Metabolic panel 7 |
| Metabolic syndrome |
| Metabolism |
| Metabolism – inborn errors of |
| Metabolite |
| Metachromatic leukodystrophy |
| Metal cleaner |
| Metal polishes |
| Metallic taste |
| Metanephrine |
| Metastases to the liver |
| Metastasis |
| Metastatic brain tumor |
| Metastatic cancer |
| Metastatic cancer to the lung |
| Metastatic pleural tumor |
| Metatarsus adductus |
| Metatarsus varus |
| Metered-dose inhaler administration |
| Methadone overdose |
| Methanol poisoning |
| Methanol test |
| Methapyrilene hydrochloride overdose |
| Methemoglobin |
| Methemoglobinemia |
| Methemoglobinemia – acquired |
| Methicillin-resistant Staphylococcus aureus |
| Methyl salicylate overdose |
| Methyl-salicylate and menthol overdose |
| Methylene blue test |
| Methylmalonic acid test |
