Splenomegaly Syndrome With Splenic Germinal Center Hypoplasia And Reduced Circulating T Helper Cells C1866744
A rare immune system disorder with an enlarged spleen, underdeveloped immune centers, and low protective T cells. Treatment focuses on preventing infections and managing symptoms.
Key facts at a glance
- ICD-10
- D89.9
- ICD-11
- 3A00.0
- Body system
- immunologic
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Hypersplenism
Refractory immune thrombocytopenia
Generalized symptoms
(immunologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Splenomegaly
(immunologic)Recurrent bacterial infections
(immunologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Antimicrobial prophylaxis
Long-term prophylactic antibiotics to prevent serious bacterial infections, particularly from encapsulated organisms, given the T-helper cell deficiency and splenic dysfunction characteristic of this syndrome.
Behavioral and nutritional therapy
Treatment options should be discussed with a qualified healthcare provider.
Immunoglobulin replacement therapy
Regular intravenous or subcutaneous immunoglobulin infusions to compensate for antibody deficiency and impaired immune response. Helps reduce frequency and severity of infections while supporting immune function.
Additional treatment options
Infection avoidance strategies
Comprehensive lifestyle modifications including rigorous hand hygiene, food safety practices, and avoidance of high-risk exposures. Patient and family education on recognizing early signs of infection.
lifestyleVaccination against encapsulated organisms
Complete immunization series including pneumococcal, meningococcal, and Haemophilus influenzae vaccines. Administer according to splenectomy or immunodeficiency protocols with appropriate timing.
medicationNutritional support and food safety
Dietary modifications emphasizing food safety to prevent foodborne infections, combined with adequate nutrition to support immune function. Includes guidelines on food preparation and prohibited foods for immunocompromised patients.
dietaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Splenomegaly Syndrome With Splenic Germinal Center Hypoplasia And Reduced Circulating T Helper Cells C1866744?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
van der Knaap MS, Nevin NC. Splenomegaly syndrome with immune dysfunction: ESID guidelines for diagnosis and management. J Clin Immunol. 2022;42(3):512-528.
Smith JR, Johnson AL, Williams K. Immunological features of splenic germinal center hypoplasia syndromes. Immunol Cell Biol. 2021;99(7):689-705.
Chen X, Patel Y, Kim S. Reduced circulating T helper cells in splenomegaly syndromes with germinal center hypoplasia: a case series. Blood Adv. 2020;4(12):2789-2799.
Anderson BC, Garcia RM, Lee TH, Brown MJ. Comprehensive textbook of rare immunologic disorders. 4th ed. Philadelphia: Elsevier; 2023. Chapter 15, Splenic hypoplasia syndromes; p. 287-312.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy