Medical Dictionary Terms Beginning with L

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Lamella

Lamella: A thin leaf, plate, disk, wafer.
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Lamina

Lamina: A plate or layer. For example, the lamina arcus vertebrae, usually just called the lamina, are plates of bone in each vertebral body.
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Lancet

Lancet: Small pointed knife used to do a finger prick for a blood test. Also the name of a medical journal in England.
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Langerhans, islets of

Langerhans, islets of: Best known as the insulin-producing tissue, the islets of Langerhans do more than that. They are groups of specialized cells in the pancreas that make and secrete hormones. Named after the German pathologist Paul Langerh
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Lanugo

Lanugo: The downy hair on the body of the fetus and newborn baby. The lanugo hair (or lanugal hair) is the first hair to be produced by the fetal hair follicles. It is very fine, soft and usually is unpigmented. The lanugal hair is prenatal hair
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Laparoscopy

Laparoscopy: A type of surgery where small incisions are made in the abdominal wall through which instruments are placed that can help in visualizing structures in the abdomen and pelvis.
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Laparotomy

Laparotomy: An operation to open the abdomen. The word "laparotomy" was first used to designate this operation in 1878 by an English surgeon, Thomas Bryant. The word has an interesting derivation. It was compounded from Greek roots "lapara" referri
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Large cell carcinoma

Large cell carcinoma: A group of lung cancers in which the cells are large and look abnormal.
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Large intestine

Large intestine: Comes after the small intestine. Large because it is wider than the small intestine.
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Laryngeal

Laryngeal: Having to do with the larynx.
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Laryngeal nerve palsy

Laryngeal nerve palsy: Paralysis of the recurrent laryngeal nerve, a branch of the vagus nerve (a long and important nerve that originates in the brainstem and runs down to the colon). After the recurrent laryngeal nerve leaves the vagus nerve, it goes d
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Laryngeal nerve, recurrent

Laryngeal nerve, recurrent: One of the best known branches of the vagus nerve (a long and important nerve that originates in the brainstem and runs down to the colon). After the recurrent laryngeal nerve leaves the vagus nerve, it goes down into the ches
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Laryngeal palsy

Laryngeal palsy: Paralysis of the recurrent laryngeal nerve, a branch of the vagus nerve (a long and important nerve that originates in the brainstem and runs down to the colon). After the recurrent laryngeal nerve leaves the vagus nerve, it goes down in
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Laryngeal papilloma

Laryngeal papilloma: A warty growth in the larynx, ususally on the vocal cords. Persistent hoarseness is a common symptom.
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Laryngeal papillomatosis

Laryngeal papillomatosis: Numerous warty growths on the vocal cords. Most common in young children. Recurrences are, unfortunately, frequent. Remission may occur after several years. The disease can be due to the baby contracting human papilloma
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Laryngectomee

Laryngectomee: A person who has had his or her voice box removed.
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Laryngectomy

Laryngectomy: Surgery to remove part or all of the larynx is a partial or total laryngectomy. In either operation, the surgeon performs a tracheostomy, creating an opening called a stoma in the front of the neck. (The stoma may be temporary or perma
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Laryngomalacia

Laryngomalacia: A soft floppy larynx.
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Laryngoscope

Laryngoscope: A flexible, lighted tube used to examine the larynx.
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Laryngoscopy

Laryngoscopy: Examination of the larynx with a mirror (indirect laryngoscopy) or with a laryngoscope (direct laryngoscopy).
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