Penny Review Chapter 6: Spleen

what race is least likely to suffer from sickle cell anemia

caucasian

the splenic artery originates at the

celiac trunk

The spleen removes irregular cells from the bloodstream and retains them through a process called:

culling

all of the following are functions of the spleen except storage of iron destruction of phagocystic cells defense against disease blood resivoir

destruction of phagocystic cells

what is the most common appearance of a splenic hemangioma

echogenic

the process of making red blood cells is

erythropoiesis

multiple, small foci scattered throughout the spleen in a patient with a hx of toxoplasmosis is most likely

granulomas

a 14 yr male patient presents after falling off bike. You see a complex mass within the spleen. This is most likley

hematoma

a 15 yr old patient presents with a hx of left sided trauma 5 years earlier. currently has no LUQ discomfort. Sono finding of spleen show a mass that contains calcs producing distinct posterior shadowing. What is this most likely

hematoma

where is the most common location of an accessory spleen

hilum

A complex cyst that results from the parasitic infestation of the spleen by a tapeworm is the:

hydatid cyst

an area within the spleen that has become necrotic due to lack of oxygen

infarct

The Spleen is Intra/Retroperitoneal?

intraperitoneal

what is a benign lesion that is congenital malformation of the lymphatic system

lymphangioma

a 35 yr male patient presents for an abd US with a hx of abd pain and histoplasmosis. what are you most likely to see within the spleen

many granulomas

small echogenic foci scattered throughout the spleen

multiple benign granulomas

all of the following can be associated with splenomegaly except trauma pancreatitis hemolytic abnormalities mononucleosis

pancreatitis

the splenic process of clearing red blood cells of unwanted material

pitting

the most common cause of splenomegaly is

portal hypertension

the splenic veins marks the

posterior aspect of the panc body and tail

The type of tissue within the spleen that is responsible for its phagocytic function is the:

red pulp

what systemic disease results in the development of granulomas within the spleen and throughout the body

sarcoidosis

what is the congenital anomaly in which the spleen is divided into two portions by a band of tissue

splenic cleft

a 32 yr old female patient presents to have abd US and you find a 1cm rounded, echogenic mass that does not produce acoustic shadowing

splenic hemangioma

a 48 year old male presents with hx of severe, sudden onset of LUQ pain w/o trauma. On sono, there is a wedge shaped hypoechoic area within spleen

splenic infarct

Diffuse involvement of lymphoma or leukemia of the spleen will often lead to

splenomegaly

a sickle cell crisis will often lead to

splenomegaly

implantation of ectopic splenic tissue possibly secondary to splenic rupture

splenosis

the splenic artery marks the

superior aspect of the pancreatic body and tail

a patient with wandering spleen would have an increased risk of

torsion (vessels can easily twist due to high mobility)

a splenic hamartoma may be discovered more often in individuals with a hx of

tuberous sclerosis

The type of tissue responsible for its lymphatic function is the:

white pulp

all of the following are true of the spleen except -the spleen has a convex inferior margin and a concave superior border -largest structure of the reticuloendothelial system -primary objective is the filter peripheral blood -considered the largest lymphatic organ

-convex inferior and concave superior border

Epstein-Barr infection is best described as

A herpes virus that can lead to infectious mononucleosis in children

a patient with suspected lymphoma and presence of Reed-Sternberg cells indicate

Hodgkin Lymphoma

The splenic vein joins with what structure posterior to the pancreatic neck to form the portal vein?

SMV

Small mass in area of splenic hilum that is isoechoic to the spleen

accessory spleen

a rare malignant tumor the spleen that consists of blood vessels is

angiosarcoma

what is the most likely clinical finding of a patient who has a splenic hemangioma

asymptomatic

a 26 yr old patient with long standing hx of sickle cell crises and subsequent splenic infarctions presents for sono. Only fraction of splenic tissue can be identified. This describes the process of

autosplenectomy