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  3. R00–R99
  4. R50-R69
  5. Enlarged lymph nodes (R59)

Enlarged lymph nodes (R59)

Clinical Information for Enlarged lymph nodes (R59)

AIDS-Related Complex - A prodromal phase of infection with the human immunodeficiency virus (HIV). Laboratory criteria separating AIDS-related complex (ARC) from AIDS include elevated or hyperactive B-cell humoral immune responses, compared to depressed or normal antibody reactivity in AIDS; follicular or mixed hyperplasia in ARC lymph nodes, leading to lymphocyte degeneration and depletion more typical of AIDS; evolving succession of histopathological lesions such as localization of Kaposi's sarcoma, signaling the transition to the full-blown AIDS.

HIV - Human immunodeficiency virus. A non-taxonomic and historical term referring to any of two species, specifically HIV-1 and/or HIV-2. Prior to 1986, this was called human T-lymphotropic virus type III/lymphadenopathy-associated virus (HTLV-III/LAV). From 1986-1990, it was an official species called HIV. Since 1991, HIV was no longer considered an official species name; the two species were designated HIV-1 and HIV-2.

HIV Antibodies - Antibodies reactive with HIV ANTIGENS.

HIV Antigens - Antigens associated with specific proteins of the human adult T-cell immunodeficiency virus (HIV); also called HTLV-III-associated and lymphadenopathy-associated virus (LAV) antigens.

Immunoblastic Lymphadenopathy - A disorder characterized by proliferation of arborizing small vessels, prominent immunoblastic proliferations and amorphous acidophilic interstitial material. Clinical manifestations include fever, sweats, weight loss, generalized lymphadenopathy and frequently hepatosplenomegaly.

Lymphadenopathy - Disease of LYMPH NODES which are abnormal in size, number or consistency.

Spotted Fever Group Rickettsiosis - A group of arthropod-borne diseases caused by spotted fever bio-group members of RICKETTSIA. They are characterized by fever, headache, and petechial (spotted) rash.

Castleman Disease - Large benign, hyperplastic lymph nodes. The more common hyaline vascular subtype is characterized by small hyaline vascular follicles and interfollicular capillary proliferations. Plasma cells are often present and represent another subtype with the plasma cells containing IgM and IMMUNOGLOBULIN A.

Lymph Nodes - They are oval or bean shaped bodies (1 - 30 mm in diameter) located along the lymphatic system.

Rickettsia - A genus of gram-negative, aerobic, rod-shaped bacteria often surrounded by a protein microcapsular layer and slime layer. The natural cycle of its organisms generally involves a vertebrate and an invertebrate host. Species of the genus are the etiological agents of human diseases, such as typhus.

Instructional Notations

Includes Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

  • swollen glands

Type 1 Excludes Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

  • lymphadenitis NOS I88.9
  • acute lymphadenitis L04
  • chronic lymphadenitis I88.1
  • mesenteric acute chronic lymphadenitis I88.0