SPLEEN PENNY
Splenic trauma
clinical: severe LUQ pain, decreased hematocrit. sono: isoechoic, anechoic or echogenic
the spleen is the largest ______ organ
lymphatic
small echogenic foci scattered throughout the spleen most likely represent
multiple benign granulomas
a 35 year old male presents to you with abdominal pain and histoplasmosis. what are you most likely to identify in the spleen?
multiple granulomas
what is not associated with splenomegaly?
pancreatitis
splenomegaly most common cause
portal hypertension. other causes: AIDs, sickle cell anemia
angiosarcoma
primary malignant tumor of the spleen. sono: diffuse; splenomegaly. focal; hypoechoic masses
phagocytic function, destroy pathogens
red pulp
granulomatous disease
small foci within the spleen; granulomas. clinical: asympomatic, found in patients who has a history of histoplamosis. sono; small echogenic foci
the splenic vein joins with what structure posterior to the pancreatic neck to form the portal vein?
superior mesenteric artery
composed of specialized tissues
white and red pulp
lymphatic function of the spleen, producing lymphocytes to aid in the immune response, is performed by the
white pulp
the type of tissue within the spleen that is responsible for its lymphatic function is the
white pulp
the splenic artery originates at the
CELIAC TRUNK
in a patient with suspected lymphoma, the presence of Reed-Sternberg cells indicates
Hodgkin lymphoma
the splenic vein marks the
POSTERIOR aspect of the pancreatic body and tail
the splenic artery marks the
SUPERIOR aspect of the pancreatic body and tail
histoplasmosis
a disease that results from the inhalation of an airborne fungus that can effect the lungs and may spread to other organs. resulting in development of granulomas
Epstein-Barr infection is best described as
a herpesvirus that can lead to infectious mononucleosis.
accessory spleen
a small, round island of splenic tissue near the splenic hilum or near the tail of the pancreas
a rare malignant tumor of the spleen that consists of blood vessels is an
angiosarcoma
Epstein-Barr infection
associated with mononucleosis, typically results in splenomegaly in children. a herpesvirus that can lead to infectious mononucleosis.
what is the most common sonographic appearance of a splenic hemangioma?
echogenic
splenomegaly
enlargement, most common abnormality of the spleen. should never measure more than 12cm in length and 5cm in thickness. clinical: palpable, possible elevated RBC or WBC count. sono: enlargement
primary objective
filter peripheral blood
a 32 year old patient presents to you with a 1cm, rounded echogenic mass that does not produce acoustic shadowing. likely diagnosis?
hemangioma
what systemic disease results in the development of granulomas within the spleen and throughout the body?
histoplasmosis
a complex cyst that results from the parasitic infestation of the spleen by a tape worm
hydatid cyst
the spleen is a ____ organ
intraperitoneal
the spleen is a _____ organ
intraperitoneal
the most common cause of splenomegaly is
portal hypertension
the tissue within the spleen that is responsible for its phagocytic function is the
red pulp
vascularity of the spleen
splenic artery and vein
a 14 year old male patient presents to you after falling fro his bicycle. ultrasound reveals a complex appearing mass within the spleen. this most likely represents a
splenic hematoma
an area within the spleen that has become necrotic because of a lack of oxygen is called
splenic infarct
diffuse involvement of lymphoma or leukemia of the spleen will often lead to
splenomegaly
sickle cell disease will often lead to
splenomegaly
splenic hemangioma
the MOST COMMON BENIGN tumor of the spleen. clinical: asymptomatic. sono: well defined, hyperechoic mass.
Lymphoma
the most common MALIGNANCY of the spleen. classified as Hodgkin or non Hodgkin. Reed-Sternberg cells indicates Hodgkins, which can be treated and has a high recovery rate.
culling
the process of the spleen removing irregular cells from the blood stream and retaining them
Splenic infarct
tissue that has been deprived of oxygen will eventually die. this is referred to as, infarct. caused by bacterial endocarditis. clinical:sudden LUQ pain, sono: acute; hypoechoic, wedge-shaped mass within the spleen. chronic; hyperechoic,wedge-shaped mass within the spleen.