Medical abbreviations and acronyms (M)
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This article contains a list of commonly used medical abbreviations and acronyms that start with the letter M and may be encountered in medicine and radiology (please keep the main list and any sublists in alphabetic order).
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z - misc
- M
- male
- marginal artery
- mega (SI prefix for 106)
- metastable (isotope)
- metastatic (TNM system)
- methionine (single letter amino acid code)
- metre
- mitotic (phase)
- molar (=mols/L)
- motor (GCS)
- m: milli- (SI prefix for 10-3)
- M1-M6: segments of middle cerebral artery
- MAC
- MAG: magnification
- MAG-3: mercaptoacetyltriglycine
- MAGiC: magnetic resonance image compilation (GE)
- MAI:
- minimal aortic injury
- miscarriage after infertility
- Mycobacterium avium-intracellulare infection
- MAL: mid axillary line
- MAM: mammogram
- MAMMO: mammogram
- MAO: monoamine oxidase
- MAP
- magnesium ammonium phosphate
- mean arterial pressure
- mAs: milliampere-seconds
- MAVRIC: multiacquisition variable-resonance image combination (GE)
- MAVRIC-SL: multiacquisition variable-resonance image combination
- Maxfax: maxillofacial surgery/surgeon
- MB
- bachelor of medicine
- megabyte
- multiband (imaging)
- myoglobin
- MBA: motorbike accident
- MBBS: bachelor of medicine and bachelor of surgery
- MBC: motorbike collision
- mBC: metastatic breast cancer
- MBL: monoclonal B-cell lymphoma
- MBq: megabecquerel
- MC
- M/CMCA
- miscarriage
- motorcycle
- middle cerebral artery
- middle colic artery
- MCD: molybdenum cofactor deficiency
- MCG/mcg: microgram (preferred to μg in medical notes)
- MCI: mass casualty incident
- mCi: millicurie
- MCL
- medial collateral ligament (of the elbow)
- medial collateral ligament (of the knee)
- mid clavicular line
- MCPJ: metacarpophalangeal joint
- mCRC: metastatic colorectal cancer
- MCS: microscopy, culture, and sensitivity
- MCTD: mixed connective tissue disease
- MCV: middle cardiac vein
- MD
- doctor of medicine (Latin: medicinae doctor)
- managing director
- Meckel diverticulum
- medical director
- muscular dystrophy
- Md: mendelevium
- MDA criteria: MD Anderson criteria for assessing response of bone metastases to treatment
- MDCT: multidetector CT
- MDD: major depressive disorder
- MDI: multidirectional instability (of shoulder)
- MD-IPMN: main duct type intraductal papillary mucinous neoplasm
- MDM: multidisciplinary (team) meeting
- MDMA: 3,4-methylenedioxymethamphetamine
- MDP: methylene-diphosphonate
- MDR-TB: multidrug-resistant tuberculosis
- MDT: multidisciplinary team
- MDTM: multidisciplinary team meeting
- ME
- medical examiner
- middle ear
- myalgic encephalomyelitis
- ME/CFS: myalgic encephalomyelitis/chronic fatigue syndrome
- MEB: muscle-eye-brain disease
- MEDIC: multiecho data image combination (Siemens)
- MEDS: medication
- MEG: megalencephaly
- MELAS: mitochondrial encephalopathy with lactic acidosis and stroke-like episodes
- MELD (score): model of end-stage liver disease
- MEN: multiple endocrine neoplasia
- MERGE: multiple-echo recombined gradient echo (GE)
- MERRF: myoclonic epilepsy with red ragged fibres
- MESA
- microsurgical epididymal sperm aspiration
- multiethnic study of atherosclerosis
- MET
- medical expulsive therapy (ureteric calculi)
- metabolic equivalent
- metastasis
- Met
- metastasis
- methionine
- MetHb: methaemoglobin
- Mets: metastases
- MF: middle finger
- MFC: medial femoral condyle
- MFFE: multiecho fast field echo (Philips)
- MFH: malignant fibrous histiocytoma
- MG
- mammogram
- middle grade (UK physician grade)
- milligram
- myasthenia gravis
- Mg: magnesium
- MGHL: middle glenohumeral ligament
- mGy: milligray
- MGUS
- MH: medical history (or M/H)
- MHC: major histocompatibility complex
- MHV: middle hepatic vein
- MHz: megahertz
- MI
- MIBC: muscle invasive bladder cancer
- MIBG: metaiodobenzylguanidine
- MIBI: methoxyisobutylisonitrile
- Micro
- microbiology
- microscopy
- MIDCAB: minimally invasive direct coronary artery bypass
- Min: minute
- MinIP: minimum intensity projection
- MINOCA: myocardial infarction with non-obstructive coronary arteries
- MIP: maximum intensity projection
- MISME: multiple inherited schwannomas, meningiomas, ependymomas
- ML
- mediolateral
- middle lobe
- mobile lipids (MRS)
- mL: millilitre
- ml: millilitre
- MLC: multileaf collimator
- MLO: mediolateral oblique
- MLS: midline shift
- MM
- mm: millimetre
- M&M: morbidity and mortality
- MMC: myelomeningocele
- mmHg: millimetres of mercury
- M-mode: motion mode (ultrasound)
- MMR
- MMRV: measles, mumps, rubella, and varicella (vaccine)
- MMSE: mini mental status exam
- Mn: manganese
- MNG: multinodular goitre
- MO: myositis ossificans
- Mo
- molybdenum
- month
- MOCD: molybdenum cofactor deficiency
- Mol: mole (SI unit of quantity of substance)
- MOTSA: multiple overlapping thin slab acquisition
- MP
- megapixel
- middle phalanx
- MPA: main pulmonary artery
- mPAP: mean pulmonary arterial pressure
- MPC
- MPD: main pancreatic duct
- MPGN: membranoproliferative glomerulonephritis
- MPP: Mycoplasma pneumoniae pneumonia
- MPR: multiplanar reformation or reformats
- MPRAGE: magnetisation-prepared rapid gradient echo
- MPS: mucopolysaccharidoses
- MPV: main portal vein
- MR
- MRA: magnetic resonance angiogram
- MRCP
- magnetic resonance cholangiopancreatography
- member(ship) of the Royal College of Physicians (UK)
- MRE
- mrem: millirem
- MRF: mesorectal fascia
- MRI: magnetic resonance imaging
- MRL: magnetic resonance lymphangiography
- MRN: medical record number
- mRNA: messenger ribonucleic acid
- MRONJ: medication-related osteonecrosis of the jaw
- MRP: magnetic resonance perfusion
- MRPA: magnetic resonance pulmonary angiography
- MRPI: magnetic resonance parkinsonism index
- MRS: magnetic resonance spectroscopy
- MRSA: meticillin-resistant Staphylococcus aureus
- MRV: magnetic resonance venogram
- MS
- master of surgery
- mitral stenosis
- multiple sclerosis
- MSA: multisystem atrophy
- MSBD: mixed sclerosing bone dysplasia
- MSD: mean sac diameter
- MSE: mental status exam
- MSH: melanocyte-stimulating hormone
- MSK
- MSM: men who have sex with men
- MSSA: meticillin-susceptible/sensitive Staphylococcus aureus
- MSSU: midstream sample of urine
- MSU
- midstream urine
- monosodium urate
- mSv: millisievert
- MT: metatarsal
- MTA score: medial temporal lobe atrophy score
- MTC: medullary thyroid carcinoma
- MTPJ: metatarsophalangeal joint
- MTS: mesial temporal sclerosis
- MTSS: medial tibial stress syndrome
- MTT: mean transit time
- MTX: methotrexate
- MUA: manipulation under anaesthesia
- Multips: multipara
- MV: mitral valve
- MVA: motor vehicle accident
- MVC: motor vehicle crash (or collision)
- MVE: Murray Valley encephalitis
- MVO: microvascular obstruction
- MVP: mitral valve prolapse
- MVR: mitral valve replacement
- MVV: maximal voluntary ventilation
- MWA: microwave ablation
- Mx
- management
- maxwell (CGS unit of magnetic flux)
- metastases cannot be assessed (TNM)
- MZ
- mid zone
- monozygote
- +<li>mobile lipids (<a title="MRS" href="/articles/mr-spectroscopy-1">MRS</a>)</li>
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