Name
Fibroblastic reticular cell tumor
ICD-O-3 Morphology
9759/3: Fibroblastic reticular cell tumor
Effective
2010 and later
Reportable
for cases diagnosed
2010 and later
Primary Site(s)
See Module 7
Most common sites of involvement: lymph nodes, spleen, soft tissue
Coding Manual:
Hematopoietic Coding Manual (PDF)
Abstractor Notes
(This code is effective for cases diagnosed 2010 and later.) Fibroblastic reticular cell tumor is extremely rare.
Clinical outcome is variable with some patients dying of the disease. The tumor is similar to follicular dendritic cell sarcoma (9758/3) and Interdigitating dendritic cell sarcoma (9757/3) but lacks the immunophenotypic profile of these tumor types.
Clinical outcome is variable with some patients dying of the disease. The tumor is similar to follicular dendritic cell sarcoma (9758/3) and Interdigitating dendritic cell sarcoma (9757/3) but lacks the immunophenotypic profile of these tumor types.
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.
Grade
Not Applicable
Module Rule
None
Alternate Names
Cytokeratin-positive interstitial reticulum cell tumor
Fibroblastic dendritic cell tumor
Definition
Fibroblastic reticular cell tumor is very rare. Tumors diagnosed as cytokeratin-positive interstitial reticulum cell tumors, probably constitute the same entity.
Definitive Diagnostic Methods
Histologic confirmation
Immunophenotyping
Genetics Data
None
Immunophenotyping
CD68 variably immunoreactive
Cytokeratin (in dendritic pattern) variably immunoreactive
Desmin variably immunoreactive
SMA variably immunoreactive
Treatments
Chemotherapy
Radiation therapy
Surgery
Transformations to
There are no known transformations
Transformations from
There are no known transformations
Same Primaries
Corresponding ICD-9 Codes
202.9 Other and unspecified malignant neoplasm of lymphoid and histiocytic tissue
Corresponding ICD-10 Codes
C96.7 Other specified malignant neoplasms of lymphoid, hematopoietic, and related tissue
C96.9 Malignant neoplasms of lymphoid, hematopoietic, and related tissue, unspecified
Corresponding ICD-10-CM Codes (U.S. only)
C96.4 Sarcoma of dendritic cells (accessory cells) (effective October 01, 2015)
Signs and Symptoms
Diagnostic Exams
Biopsy
Blood chemistry studies
Bone marrow aspiration and biopsy
Bone scan
BRAF testing
CT (CAT) scan
Endoscopy
Flow cytometry
Immunophenotyping
Liver function test
Neurological exam
PET (positron emission tomography) scan
Ultrasound exam
Urinalysis
Water deprivation test
Progression and Transformation
None
Epidemiology and Mortality
Incidence: very rare
Sources
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: Histiocytic and dendritic cell neoplasms
Pages: 479-480
WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues (Revised 4th edition)
IARC: Lyon 2017
Section: Histiocytic and dendritic cell neoplasms
Pages: 479-480
International Classification of Diseases for Oncology, Third Edition, Second Revision. Geneva: World Health Organization, 2020.
Section: ICD-O-3.2 (2020) Morphological Codes
Pages: http://www.iacr.com.fr/index.php?option=com_content&view=category&layout=blog&id=100&Itemid=577
Section: ICD-O-3.2 (2020) Morphological Codes
Pages: http://www.iacr.com.fr/index.php?option=com_content&view=category&layout=blog&id=100&Itemid=577
National Cancer Institute
Section: General Information About Langerhans Cell Histiocytosis (LCH)
Pages: https://www.cancer.gov/types/langerhans/hp/langerhans-treatment-pdq#section/_178%20or%20http://www.cancer.gov/types/langerhans/patient/langerhans-treatment-pdq
Section: General Information About Langerhans Cell Histiocytosis (LCH)
Pages: https://www.cancer.gov/types/langerhans/hp/langerhans-treatment-pdq#section/_178%20or%20http://www.cancer.gov/types/langerhans/patient/langerhans-treatment-pdq