Dentosphere : World of Dentistry

# Which out of the following is a contraindication for splenectomy ? A. Iatrogenic splenic rupture B. Thrombocytopenia C. Presence of bone marrow failure D. Hairy cell leukemia The correct answer is C. Presence of bone marrow failure. The only contraindication to splenectomy is the presence of marrow failure, in which the enlarged spleen is the only source of hematopoietic tissue. Ref: Harrison’s 18th Ed. 471

# Weight of a normal spleen is ? A. < 150 grams B. < 250 grams C. < 350 grams D. < 450 grams The correct answer is B. < 250 grams. Normal spleen weighs <250 grams. Ref: Harrison’s 18th Ed. 468

# Enlarged, grayish yellow or orange tonsils are pathognomic of ? A. Waldenström’s macroglobulinemia B. Polycythemia vera C. Wolman disease D. Tangier disease The correct answer is D. Tangier Disease. Tangier disease is associated with cholesterol accumulation in reticuloendothelial system with hepatosplenomegaly & enlarged, grayish yellow or orange tonsils. Ref: Harrison’s 18th Ed. 3154

# Preauricular lymphadenopathy accompanies which of the following? A. Scalp infection B. Ear infection C. Conjunctival infections D. Tooth infection The correct answer is: C. Conjunctival infections. Preauricular adenopathy accompanies conjunctival infections and cat-scratch disease. Ref: Harrison’s 18th Ed. 466

# Occipital lymphadenopathy accompanies which of the following ? A. Scalp infection B. Ear infection C. Conjunctival infections D. Tooth infection The correct answer is : A. Scalp infection. Occipital adenopathy often reflects infection of the scalp. Ref: Harrison’s 18th Ed. 466

# During menstrual cycle, platelet count rise at what time ? A. Following ovulation B. At the onset of menses C. After completion of menstrual flow D. Before ovulation The correct answer is A. Following ovulation. Platelet count varies in menstrual cycle, rising following ovulation & falling at onset of menses. Ref: Harrison’s 16th Ed. 673

# The major risk factor for arterial thrombosis is ? A. Atherosclerosis B. Hyperhomocysteinemia C. Dysfibrinogenemia D. Hormonal therapy The correct answer is: A. Atherosclerosis.  The major risk factor for arterial thrombosis is atherosclerosis. Risk factors for venous thrombosis are immobility, surgery, underlying medical conditions, malignancy, hormonal therapy, obesity, and genetic predispositions.