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File:IPLab5Gaucher8.jpg|This is a higher-power photomicrograph of the spleen from this case. At this higher power individual cells can be better appreciated and the fibrillar nature of the eosinophilic cytoplasmic material can be seen.
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== Study Questions ==
* <spoiler text="What is the inheritance pattern of the various forms of Gaucher disease and what gene is involved?">Gaucher disease has an autosomal recessive inheritance pattern. There is a mutation of the glucocerebrosidase gene on chromosome 1q21.</spoiler>
* <spoiler text="What are the 3 clinical presentations that have been described for Gaucher disease?">Type I makes up 99% of the reported cases of Gaucher disease. This is termed the chronic non-neuronopathic form of Gaucher disease. In type I the build up of glucocerebrosides is only observed in phagocytic cells throughout the body, especially in the spleen, liver, and skeletal muscles. There is no brain involvement. Type I is seen primarily in Jews of European decent. Patients with this form of Gaucher disease have reduced but detectable levels of glucocerebrosidase activity. Life span is slightly shortened in these patients.
Type II is termed the infantile acute neuronopathic form of Gaucher disease. Though hepatosplenomegaly is also seen in this form of Gaucher disease, there is a progressive central nervous system involvement leading to death at an early age. There is no detectable glucocerebrosidase activity in the tissues and there is no predilection for Jews.
The third pattern, type III, is usually somewhat intermediate between types I and II. These patients are usually juveniles and have systemic involvement like in type I but they have progressive central nervous system disease that usually begins in the second or third decade of life.</spoiler>
* <spoiler text="What type of Gaucher disease did this patient likely have?">This was an adult who had pancytopenia and aseptic necrosis of bone. This is consistent with type I. In type I symptoms and signs first appear in adult life and are related to splenomegaly or to bone involvement by Gaucher cells. These patients have pancytopenia or thrombocytopenia secondary to hypersplenism and pathologic fractures and bone pain due to expansion of the marrow space by Gaucher cells.</spoiler>
{{IPLab 5}}
[[Category: IPLab:Lab 5]]