| LAP | laparoscopy; laparotomy; left arterial pressure; left atrial pressure; leucine aminopeptidase; leuke... |
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| LB | lamellar body; large bowel; left breast; left bronchus; left bundle; left buttock; leiomyoblastoma; ... |
| LBB | left bundle branch; low back bending |
| LBPQ | Low Back Pain Questionnaire |
| LBS | low back syndrome; lumbar back strain |
| Waterston operation | A surgically created anastomosis between the pulmonary artery and the ascending aorta to palliate adult tetralogy of Fallot. (05 Mar 2000) |
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| Webster's operation | An obsolete operation for retrodisplacement of the uterus, consisting of bringing the round ligaments through the perforated broad ligaments and attaching them to each other and to the back of the uterus. Synonym: Webster's operation. (05 Mar 2000) |
| Weir's operation | An obsolete eponym for appendicostomy. (05 Mar 2000) |
| Wertheim's operation | A radical operation for carcinoma of the uterus in which as much as possible of the vagina is excised and there is wide lymph node excision. (05 Mar 2000) |
| morcellation operation | <gynaecology> Vaginal hysterectomy in which the uterus is removed in multiple pieces after being split or partitioned. (05 Mar 2000) |
| commando operation | An operation for malignant tumours of the floor of the oral cavity, involving resection of portions of the mandible in continuity with the oral lesion and radical neck dissection. Synonym: commando operation. (05 Mar 2000) |
| Wheelhouse's operation | An obsolete term for external urethrotomy. (05 Mar 2000) |
| Whipple's operation | Excision of all or part of the pancreas together with the duodenum. Synonym: Whipple's operation. (05 Mar 2000) |
| Whitehead's operation | Excision of haemorrhoids by two circular incisions above and below involved veins, allowing normal mucosa to be pulled down and sutured to anal skin. (05 Mar 2000) |
| Motais' operation | Transplantation of the middle third of the tendon of the superior rectus muscle of the eyeball into the upper lid, between the tarsus and skin, to supplement the action of the levator muscle in ptosis. (05 Mar 2000) |
| plastic operation | The surgical specialty or procedure concerned with the restoration, construction, reconstruction, or improvement in the shape and appearance of body structures that are missing, defective, damaged, or misshapen. (05 Mar 2000) |
| Mules' operation | Evisceration of the eyeball followed by the insertion within the sclera of a spherical prosthesis to support an artificial eye. (05 Mar 2000) |
| Polya's operation | Operation in which a portion of the stomach is removed and a retrocolic gastrojejunostomy is constructed in an end-to-side fashion to the entire cut end of the stomach. Synonym: Polya's operation. (05 Mar 2000) |
| Mustard operation | Correction, at the atrial level, of haemodynamic abnormality due to transposition of the great arteries by an intraatrial baffle to direct pulmonary venous blood through the tricuspid orifice into the right ventricle and the systemic venous blood through the mitral valve into the left ventricle. Synonym: Mustard procedure. (05 Mar 2000) |
| Cotte's operation | Cutting of the presacral nerve to relieve severe dysmenorrhoea. Synonym: Cotte's operation, presacral sympathectomy. (05 Mar 2000) |