| MO | macroorchidism; manually operated; Master of Obstetrics; Master of Osteopathy; medical officer; mesi... |
|---|---|
| MS | Maffuci syndrome; maladjustment score; mandibular series; Marfan syndrome; Marie-Strumpell [syndrome... |
| MSW | Master of Social Welfare; Master of Social Work; medical social worker; multiple stab wounds |
| SET | Singlephoton Emission Tomography = SPECT |
| SPECT | Single Photon Emission Computed Tomography = SET |