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.