Anaplastic large cell lymphoma, ALK-positive

ICD-O-2 Morphology

9714/3: Anaplastic large cell lymphoma, T cell and Null cell type
Effective 1992 - 2000

ICD-O-3 Morphology

9714/3: Anaplastic large cell lymphoma, T cell and Null cell type
Effective 2001 and later


for cases diagnosed 1992 and later

Primary Site(s)

See Module 7
Most common sites of involvement: lymph nodes, skin, bone, soft tissue, lung, and liver. Less common sites of involvement: GI, CNS.

Abstractor Notes

Anaplastic large cell lymphoma, ALK-positive (ALCL, ALK+) frequently involves both lymph nodes and extranodal sites.The most commonly involved extranodal sites include skin, bone, soft tissue, lung, and liver. Involvement of the GI system and CNS is rare. Mediastinal involvement is less frequent than in Classical Hodgkin lymphoma.

Bone marrow involvement occurs in approximately 10-30% depending on the tests performed. The small cell variant may have a leukemic presentation with peripheral blood involvement.

Patients often have B-symptoms, especially high fever.

Diagnostic Confirmation

This histology can be determined by positive histology (including peripheral blood) with or without genetics and/or immunophenotyping. Review the Definitive Diagnostic Methods, Immunophenotyping and Genetics Data sections below, and the instructions in the Hematopoietic Manual for further guidance on assigning Diagnostic confirmation.


Not Applicable

Module Rule


Alternate Names

Anaplastic large cell lymphoma, CD30+
Anaplastic large cell lymphoma, NOS
Anaplastic large cell lymphoma, small cell variant
Anaplastic large cell lymphoma, T cell and Null cell type
Ki-1 lymphoma [OBS]
Large cell (Ki1+) lymphoma [OBS]


Anaplastic large cell lymphoma (ALCL), ALK-positive (ALK+) is a T-cell lymphoma consisting of lymphoid cells that are usually large and have abundant cytoplasm and pleomorphic, often horseshoe-shaped nuclei, with a chromosomal translocation involving the ALK gene and expression of ALK protein and CD30.

Definitive Diagnostic Methods

Bone marrow biopsy
Genetic testing
Histologic confirmation

Genetics Data

t (2;5) (p23;q35)
TR genes are clonally rearranged


CD2 positive
CD4 positive
CD5 positive
CD25 positive
CD30 positive
CD43 expression
CD45 positive
CD45RO positive
EMA positive


Hematologic Transplant and/or Endocrine Procedures
Hormone therapy

Transformations to


Corresponding ICD-9 Codes

200.6 Anaplastic large cell lymphoma

Corresponding ICD-10 Codes

C84.5 Other and unspecified T-cell lymphomas

Corresponding ICD-10-CM Codes (U.S. only)

C84.6 Anaplastic large cell lymphoma, ALK-positive (effective October 01, 2015)

Signs and Symptoms

Drenching night sweats
Fever (for no known reason)
Pain in the chest, abdomen, or bones (for no known reason)
Peripheral and abdominal lymphadenopathy
Skin rash or itchy skin
Weight loss (for no known reason)

Diagnostic Exams

Blood chemistry studies
CT (CAT) scan
Flow cytometry
Laparoscopy (rarely performed)
Laparotomy (rarely performed)
Lymph node biopsy
Peripheral blood smear
PET (positron emission tomography) scan

Progression and Transformation


Epidemiology and Mortality

Age: most frequently occurs in 30's (occurs in children and adults)
Incidence: 3% of adult and 10-20% of childhood non-Hodgkin lymphomas
Sex: slight male predominance
Survival: 5 year survival 60-80%


Swerdlow SH, Campo E, Harris NL, Jaffe ES, Pileri SA, Stein H, Thiele J (Eds):
WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues (Revised 4th edition)
IARC: Lyon 2017
Section: Mature T- and NK-cell neoplasms
Pages: 413-418

International Classification of Diseases for Oncology, Third Edition, Second Revision. Geneva: World Health Organization, 2020.
Section: ICD-O-3.2 (2020) Morphological Codes

National Cancer Institute
Section: General Information About Adult Non-Hodgkin Lymphoma (NHL)