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Acquired asplenia occurs for several reasons: Following splenectomy due to splenic rupture from trauma or because of tumor After splenectomy with the goal of interfering with splenic function, as a treatment for diseases (e.g. idiopathic thrombocytopenic purpura , thalassemia , spherocytosis ), in which the spleen's usual activity exacerbates ...
Asplenia with cardiovascular anomalies, also known as Ivemark syndrome and right atrial isomerism, [1] is an example of a heterotaxy syndrome. These uncommon congenital disorders are characterized by defects in the heart, spleen and paired organs such as the lungs and kidneys.
Without these immune functions, individuals with isolated congenital asplenia are extremely susceptible to infection. [10] Streptococcus pneumoniae is a common bacteria that affects individuals with ICAS, often causes meningitis, sepsis, and otitis media. [9]
Lack of a spleen, called asplenia, can occur by autosplenectomy or the surgical counterpart, splenectomy. Asplenia can increase susceptibility to infection. [3] Autosplenectomy can occur in cases of sickle-cell disease where the misshapen cells block blood flow to the spleen, causing scarring and eventual atrophy of the organ. [2]
Common causes include asplenia (post-splenectomy) or congenital absence of spleen (right atrial appendage isomerism). Spleens are also removed for therapeutic purposes in conditions like hereditary spherocytosis , trauma to the spleen, and autosplenectomy caused by sickle cell anemia .
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Causes: Exposure to pathogens following splenectomy or asplenia: Risk factors: Splenectomy in the past 2–3 years, removal of spleen for hematological reasons, being under the age of 2 [2] Prognosis: Almost invariably fatal without treatment [2]