lymphatic nodule

nodule /nod·ule/ (nod´ūl) a small node or boss which is solid and can be detected by touch.nod´ular

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Albini's nodules  gray nodules of the size of small grains, sometimes seen on the free edges of the atrioventricular valves of infants; they are remains of fetal structures.

apple jelly nodules  minute, yellowish or reddish brown, translucent nodules, seen on diascopic examination of the lesions of lupus vulgaris.

nodules of Arantius  see under body.

Aschoff's nodules  see under body.

Bianchi's nodules  bodies of Arantius.

Brenner nodules  nodular masses of tumor in the cyst wall in cases of Brenner tumor.

Gamna nodules , Gandy-Gamna nodules brown or yellow pigmented nodules sometimes seen in the enlarged spleen, e.g., in Gamna's disease and siderotic splenomegaly.

Jeanselme's nodules  juxtaarticular n's.

juxtaarticular nodules  gummata of tertiary syphilis and of nonvenereal treponemal diseases, located on joint capsules, bursae, or tendon sheaths.

Lisch nodules  hamartomas of the iris occurring in neurofibromatosis.

lymphatic nodule 

1. lymph node.

2. a small, dense accumulation of lymphocytes within the lymph node cortex, expressing tissue cytogenetic and defense functions.

milker's nodules  paravaccinia.

Morgagni's nodules  bodies of Arantius.

pulp nodule  denticle (2).

rheumatic nodules  small, round or oval, mostly subcutaneous nodules similar to Aschoff bodies; seen in rheumatic fever.

rheumatoid nodules  subcutaneous nodules consisting of central foci of necrosis surrounded by palisade-like coronas of fibroblasts, seen in rheumatoid arthritis.

Schmorl's nodule  an irregular or hemispherical bone defect in the upper or lower margin of the body of the vertebra.

triticeous nodule  see under cartilage.

typhus nodules  minute nodules, originally described in typhus, produced by perivascular infiltration of polymorphonuclear leukocytes and mononuclear cells in typhus.

nodule of vermis  the part of the vermis of the cerebellum, on the ventral surface, where the inferior medullary velum attaches.

vocal cord nodules  singer's or teacher's nodes; small white nodule on the vocal cords in those who use their voice excessively.

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lymphatic nodule.

See malpighian body, def 2.

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lymphatic, lymphoid

1. pertaining to lymph or to a lymphatic vessel.

2. a lymphatic vessel.

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lymphatic aplasia

causes distention of other lymphatics where lymph flow is blocked and local edema.

lymphatic ducts

the two larger vessels into which all lymphatic vessels converge. The right lymphatic duct joins the venous system at the junction of the right jugular and subclavian veins and carries lymph from the cranial right side of the body. The left lymphatic duct, or thoracic duct, enters the circulatory system at the junction of the left jugular and subclavian veins; it returns lymph from the cranial left side of the body and caudal to the diaphragm.

lymphatic enlargement

includes distention with lymph as in lymphangiectasia, or thickened as in cutaneous tuberculosis.

lymphatic flow obstruction

by local compression, congenital, segmental aplasia, lymphangitis, lymphadenitis.

lymphatic follicle

see lymph nodule; may be primary or secondary.

inherited lymphatic obstruction edema

inherited as a single recessive in Ayrshire and Hereford cattle; calves are edematous, locally or generally at birth and do not improve; the defect is in aplasia of lymph vessels and nodes.

lymphatic leukemia

see lymphatic leukemia.

lymphatic lumbar trunks

a plexus of lymphatics on the abdominal roof that drain into the cisterna chyli.

lymphatic nodule

see lymph nodule.

primary lymphatic organs

see lymphoid organs.

secondary lymphatic organs

see lymphoid organs.

lymphatic system

the lymphatic vessels and lymphoid tissue, considered collectively. See also circulatory system.

Lymphatic vessels and lymph nodes in the dog. By permission from Aspinall V, O'Reilly M, Introduction to Veterinary Anatomy and Physiology, Butterworth Heinemann, 2004

lymphatic tissue

see lymphoid tissue.

lymphatic vessel obstruction

occurs as a result of pressure from nearby tumors or other space-occupying lesions, because of hypoplasia of lymph nodes in the fetus, in extensive calcinosis, e.g. in Solanum malacoxylon poisoning and in horses not getting sufficient exercise. Called also lymphangiectasia.

lymphatic vessels

the capillaries, collecting vessels, and trunks that collect lymph from the tissues and carry it to the bloodstream; called also lymphatics.