genetic and pedia dse Flashcards
1
Q
These disorders are derived from one’s parents, transmitted through gametes through the generations, and are therefore familial.
A
Hereditary disorders(TOPNOTCH)
2
Q
This term literally means “present at birth”.
A
Congenital(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.227
3
Q
This term refers to permanent changes in the DNA.
A
Mutations(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.227
4
Q
This type of mutation results from the substitution of a single nucleotide base by a different base, resulting in the replacement of one amino acid by another.
A
Missense mutation(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.227
5
Q
This type of mutation results in the replacement of one amino acid by a stop codon, resulting in chain termination.
A
Nonsense mutation(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.227
6
Q
Missense, nonsense and silent mutations are examples of ________ mutations, wherein only one base pair is replaced.
A
Point mutations(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.227
7
Q
This type of mutation occur when the insertion or deletion of one or two bse pairs alters the reading frame of the DNA strand.
A
Frameshift mutations(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.227
8
Q
These mutations are characterized by amplification of a sequence of three nucleotides.
A
Trinucleotide repeat mutations(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.227
9
Q
Disease characterized by CGG trinucleotide repeats.
A
Fragile X Syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.227
10
Q
This is a neurodegenerative genetic disorder that affects muscle coordination and leads to cognitive decline and psychiatric problems.
A
Huntington’s disease(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.229
11
Q
Genetic mutation in Huntington’s disease?
A
CAG trinucleotide repeats(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.229
12
Q
This disorder is a chronic, slowly progressing inherited genetic disorder characterized by muscle wasting, cataracts, heart conduction defects, endocrine changes and myotonia.
A
Myotonic Dystrophy(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.229
13
Q
Genetic mutation found in myotonic dystrophy?
A
CTG Trinucleotide repeats(TOPNOTCH)
14
Q
A point mutation wherein a single base pair is replaced but codes for the same amino acid, therefore has no effect on the functioning of the protein.
A
Silent mutation(TOPNOTCH)
15
Q
An example of point mutation wherein a purine base is replaced by another purine base or a pyrimidine base is replaced by another pyrimidine base.
A
Transition(TOPNOTCH)
16
Q
A point mutation wherein a purine is replaced by a pyrimidine or vice versa.
A
Transversion(TOPNOTCH)
17
Q
Diseases caused by single gene defects are called?
A
Mendelian Disorders(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.228
18
Q
A condition wherein both dominant and recessive alleles of a gene pair may be fully expressed in the heterozygote.
A
Codominance(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.228
19
Q
The presence of many allelic forms of a single gene is called _______.
A
Polymorphism(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.228
20
Q
This occurs when one gene influences or leads to multiple phenotypic traits.
A
Pleiotropy(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.228
21
Q
A phenomenon wherein a single phenotype or genetic disorder may be caused by mutations of several genetic loci or allele.
A
Genetic heterogeneity Note: compare with pleiotropy(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.228
22
Q
A transmission pattern of inheritance which is manifested in the heterozygous state, wherein at least one parent of an index case is usually affected, both males and females are affected and both can transmit the condition.
A
Autosomal dominant (AD)(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.229
23
Q
This pattern of inheritance occur when BOTH of the alleles at a given gene locus are mutants, wherein the parents are not affected, but offspring have 1 in 4 chance (25%) of being affected.
A
Autosomal recessive(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.229
24
Q
Pattern of inheritance wherein the disorder is transmitted by heterozygous female carriers only to 50% of the sons. An affected male does not transmit the disorder to sons but all daughters are carriers.
A
X-linked disorders(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.229
25
An autosomal dominant disorder of connective tissues characterized by abnormally long legs, arms and fingers, joint hyperextensibility, pectus excavatum, lens subluxation and increased risk of aortic dissection.
Marfan Syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.230
26
Integral component of elastic fibers defective in Marfan Syndrome.
Fibrillin 1(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.230
27
Fibrillin 1 is encoded by what gene?
FBN1 gene (chromosome 15q21)(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.230
28
A collection of disorders caused by defects in collagen synthesis or structure, characterized by hyperextensible skin and joint hypermobility, rupture of internal organs and poor wound healing.
Ehlers-Danlos SyndromesThere are 6 variants to Ehlers-Danlos (nice to know)(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.231
29
This autosomal recessive inborn error of metabolism is characterized by inability to convert phenylalanine to tyrosine, strong mousy or musty odor of urine and sweat, decreased pigmentation of hair and skin, eczema, seizures and mental retardation.
Phenylketonuria (PKU)(TOPNOTCH)
30
This autosomal dominant disorder is caused by a mutation in the gene that specifies the receptor for LDL, impairing the intracellular transport and catabolism of LDL.
Familial hypercholesterolemia(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.232
31
Enzyme deficient in classic PKU.
Phenylalanine hydroxylase (PAH)(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.234
32
An autosomal recessive disorder of galactose metabolism characterized by jaundice, liver damage, cataracts, neural damage, vomiting and diarrhea.
Galactosemia(TOPNOTCH)
33
Deficiency of this enzyme can also cause symptoms of phenylketonuria due to decreased synthesis of a cofactor in the conversion of phenylalanine to tyrosine.
Dihydrobiopteridine reductase (DHPR)Enzyme responsible for the reduction of Dihydrobiopterin (BH2) to Tetrahydrobiopterin (BH4).(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.234
34
Enzyme deficient in galactosemia.
Galactose-1-phosphate uridyltransferase(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.235
35
Lysosomal storage disease due to deficiency of glucosylceramidase.
Gaucher disease(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.236
36
Lysosomal storage disease due to deficiency of B-Hexosaminidase A.
Tay-Sachs disease(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.236
37
Lysosomal storage disease due to deficiency of a-Galactosidase A.
Fabry disease(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.236
38
Lysosomal storage disease due to deficiency of Sphingomyelinase.
Niemann-Pick disease(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.236
39
Lysosomal storage disease common among Ashkenazi Jews characterized by motor weakness, mental retardation, blindness, neurologic dysfunction and death.
Tay-Sachs disease(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.236
40
Lysosomal storage disease characterized by accumulation of glucosylceramide in mononuclear phagocytic cells, which enlarge, forming "wrinkled tissue paper" cytoplasmic appearance.
Gaucher disease(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.238
41
What do you call the pathognomonic cell characterized by "wrinkled tissue paper" cytoplasmic appearance.
Gaucher cell(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.238
42
These disorders result from the accumulation of mucopolysaccharides in many tissues including the liver, spleen, heart, blood vessels, brain, cornea and joints. Affected patients have coarse facial features.
Mucopolysaccharidoses(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.238
43
Mucopolysaccharidosis characterized by corneal clouding, coronary arterial and valvular depositions, which occurs due to deficiency of a-L-iduronidase, leading to accumulation of dermatan and heparan sulfate.
Hurler syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.239
44
An X-linked mucopolysaccharidosis which is due to a deficiency of L-iduronate sulfatase. Symptoms are similar to Hurler sundrome, but without corneal clouding.
Hunter syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.239
45
Glycogen storage disease characterized by hepatomegaly, renomegaly, hypoglycemia, hyperlipidemia and hyperuricemia, leading to gout and skin xanthomas.
von Gierke's disease (Type I)(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.240
46
von Gierke's disease is due to a deficiency of what enzyme?
Glucose-6-phosphatase(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.240
47
Glycogen storage disease characterized by accumulation of glycogen in skeletal muscles leading to painful cramps during strenuous exercise and myoglobinuria.
McArdle syndrome (type V)(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.240
48
Glycogen storage disease characterized by mild hepatomegaly, cardiomegaly, muscle hypotonia, and may lead to cardiorespiratory failure.
Pompe disease (type II)(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.240
49
Enzyme deficient in McArdle syndrome.
Muscle phosphorylase(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.240
50
These disorders may result from alterations in the number or structure of chromosomes and may affect autosomes or sex chromosomes.
Cytogenetic disorders(TOPNOTCH)
51
These disorders may result from alterations in the number or structure of chromosomes and may affect autosomes or sex chromosomes.
Cytogenetic disorders(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.241
52
It is a term used to describe the presence of two or more populations of cells in the same individual.
Mosaicism(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.242
53
This refers to a lack of one chromosome of the normal complement (e.g. XO).
Monosomy(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.244
54
This refers to the presence of three copies of a particular chromosome, instead of two.
Trisomy(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.244
55
This mechanism occurs due to the failure of chromosome pairs to separate properly during meiosis stage 1 or 2.
Nondisjunction(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.243
56
This mechanism implies transfer of a part of one chromosome to another chromosome.
Translocation(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.243
57
This mechanism involves loss of a portion of a chromosome.
Deletion(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.243
58
Patients with this syndrome have severe mental retardation, flat facial profile, epicanthic folds, cardiac malformations, increased risk of leukemia, and premature development of Alzheimer's disease.
Down syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.244
59
Down syndrome is also called _________
Trisomy 21(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.245
60
Trisomy 18 is also called ________ syndrome.
Edwards syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.245
61
Trisomy 13 is also called _________ syndrome.
Patau syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.244
62
Syndrome characterized by a prominent occiput, low set ears, micrognathia, rocker-bottom feet, renal malformation, mental retardation and heart defects.
Edwards syndrome / trisomy 18(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.245
63
Syndrome characterized by mental retardation, microcephaly, micropthalmia, polydactyly, cleft lip and palate, cardiac and renal defects, umbillical hernia and rocker-bottom feet.
Patau syndrome/Trisomy 13(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.245
64
Syndrome characterized by thymic hypoplasia with diminished T-cell immunity and parathyroid hypoplasia with hypocalcemia.
DiGeorge syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.245
65
Syndrome characterized by congenital heart disease affecting outflow tracts, facial dysmorphism and developmenta delay.
Velocardiofacial syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.245
66
Deletion of genes from this chromosome gives rise to DiGeorge and velocardiofacial syndromes.
22q11.2Remember mnemonic CATCH22(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.245
67
The q from 22q11.2 refers to ________.
"Long arm" of chromosome 22.(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.246
68
Syndrome defined as male hypogonadism that develops when there are at least two X chromosomes and one or more Y chromosomes.
Klinefelter syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.246
69
Syndrome manifested by a eunochoid body habitus, reduced facial, body and pubic hair, gynecomastia, testicular atrophy, decreased serum testorerone and incresed urinary gonadotropin levels. It is the most common cause of hypogonadism in males.
Klinefelter syndrome (TOPNOTCH)Robbins Basic Pathology, 8th Ed p.246
70
Most common chromosomal derangement in Klinefelter syndrome.
47XXY(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.246
71
Syndrome which results from the partial or complete monosomy of the short arm of the X chromosome.
Turner syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.247
72
Inheritance associated with mitochondrial DNA.
Maternal inheritance(TOPNOTCH)
73
Neurodegenerative disease which manifests as progressive bilateral loss of central vision that leads to blindness. This is the prototypical disorder of mutations in mitochondrial genes.
Leber hereditary optic neuropathy(TOPNOTCH)
74
Inheritance associated with mitochondrial DNA.
Maternal inheritance(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.247
75
An epigenetic process wherein certain genes are differentially "inactivated" during paternal and maternal gametogenesis.
Genomic imprinting(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.252
76
This refers to transcriptional silencing of the maternal allele.
Maternal imprinting(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.251
77
Refers to the transcriptional silencing of the paternal allele.
Paternal imprinting(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.251
78
Syndrome characterized by mental retardation, short stature, hypotonia, obesity, small hands and feet, and hypogonadism. Paternal imprinting.
Prader-Willi syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.251
79
Syndrome manifested as mental retardation, ataxic gait, seizures and inappropriate laughter. Also called the "happy puppet syndrome". Maternal imprinting.
Angelman syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.251
80
These represent primary errors of morphogenesis due to an intrinsically abnormal developmental process.
Malformations(TOPNOTCH)
81
These represent primary errors of morphogenesis due to an intrinsically abnormal developmental process.
Malformations(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.254
82
These result from secondary destruction of an organ or body region that was previously normal in development, due to an extrinsic disturbance in morphogenesis.
Disruptions(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.254
83
These are due to generalized compression of the growing fetus by abnormal biomechanical forces, for example uterine constraint.
Deformations(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.254
84
This refers to multiple congenital anomalies that result from secondary effects of a single localized aberration in organogenesis. The initiating event may be a malformation, deformation or disruption.
Sequence(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.254
85
This refers to the presence of several defects that cannot be explained on the basis of a single localizing initiating error in morphogenesis.
Malformation syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.253
86
Elements of the TORCH complex.
TOxoplasmaTreponema pallidumRubellaCytomeglovirusHerpesvirus(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.256
87
Most common cause of neonatal mortality.
Congenital anomalies(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.253
88
Second most common cause of neonatal mortality.
Prematurity(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.257
89
Lungs of infants with this disease are normal size but are heavy and relatively airless. They have a mottled purple color, with poorly developed atelectatic alveoli.
Neonatal Respiratory Distress Syndrome / Hyaline Membrane Disease(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.257
90
Characteristic eosinophilic membranes line the respiratory bronchioles, alveolar ducts and random alveoli, which contain necrotic epithelial cells admixed with extravasated plasma proteins.
Hyaline Membrane Disease / Neonatal RDS(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.257
91
Two well known complications of high concentration ventilator administered oxygen in infants suffering from RDS.
Retrolental fibroplasia / retinopathy of prematurityBronchopulmonary dysplasia(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.258
92
Characteristic lesion in the retina of infants suffering from retrolental fibroplasia?
Neovascularization or retinal vessel proliferation(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.258
93
Main component of pulmonary surfactant.
Dipalmitoylphosphatidylcholine (DPPC) ~40%
94
Characteristic abnormality in bronchopulmonary dysplasia?
Alveolar hypoplasia or a decrease in the number of mature alveoli.(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.258
95
What is the fundamental abnormality in neonatal RDS?
Insufficient pulmonary surfactant(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.258
96
This condition occurs more commonly in very-low-birth-weight infants, as a result of intestinal ischemia, bacterial colonization of gut and formula milk feeding.
Necrotizing enterocolitis (TOPNOTCH)Robbins Basic Pathology, 8th Ed p.258
97
Microscopic features of NEC.
Presence of submucosal gas bubbles, transmural coagulative necrosis, ulceration and bacterial colonization.(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.259
98
Defined as the sudden death of an infant under 1 year of age which remains unexplained after a thorough investigation.
Sudden Infant Death Syndrome / SIDS(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.260
99
Multiple petechiae of the thymus, visceral and parietal pleura and epicardium, congested lungs with vascular engorgement with or without pulmonary edema.
Sudden Infant Death Syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.260
100
Results from antibody-induced hemolytic disease in the nnewborn that is caused by blood group incompatibility between mother and fetus, leading to edema fluid accumulation.
Immune Hydrops(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.261
101
Erythroid precursors with large homogenous, intranuclear inclusions and a surrounding peripheral rim of residual chromatin can be seen in the bone marrow aspirate of an infant infected with this virus. This leads to development of non-immune hydrops.
Parvovirus B19(TOPNOTCH)
102
Isolated postnuchal fluid accumulation in fetuses with hydrops.
Cystic hygroma(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.261
103
A lethal condition characterized by generalized edema of the fetus.
Hydrops fetalis(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.261
104
Increased hematopoietic activity leading to the presence of large number of immature red cells, including reticulocytes, normoblasts and erythroblasts. Characteristic finding in fetal anemia-associted hydrops.
Erythroblastosis fetalis(TOPNOTCH)
105
Primary gene defect in cystic fibrosis.
Abnormal CFTR (CF transmembrane conductance regulator) Chromosome 7q31.2(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.262
106
Lungs with extensive mucous plugging and dilated tracheobronchial tree. Pancreatic ducts dilated and plugged with eosinophilic mucin, atrophic parenchymal glands replaced by fibrous tissue. Hepatic steatosis, Azoospermia and infertility are some of the features of this disease.
Cystic fibrosis(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.262
107
Patients with cystic fibrosis are prone to developing infections caused by these three organisms.
S. aureusH. InfluenzaeP. aeruginosa(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.266
108
How is cystic fibrosis diagnosed?
Persistently elevated sweat chloride concentration(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.267
109
Most common tumors of infancy.
Hemangioma(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.267
110
Microscopically normal cells or tissues that are present in abnormal locations.
Heterotopia or choristoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.267
111
Port wine stains are associted with these syndromes. (2)
von Hippel-Lindau Sturge-Weber syndromes(TOPNOTCH
112
This refers to an excessive but focal overgrowth of cells and tissues native to the organ in which it occurs.
Hamartoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.267
113
Large, flat to elevated, irregular, red-blue masses in the skin.
Port wine stains(Large hemangiomas)(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.267
114
These represent the lymphatic counterpart of hemangiomas characterized as cystic and cavernous spaces lined by endothelial cells and surrounded by lymphoid aggregates,usually containing pale fluid.
Lymphangiomas(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.268
115
What do you call the rosettes found in neuroblastomas?
Homer-Wright pseudorosettes(TOPNOTCH)
116
Most common germ cell tumors of childhood,associated with meningocoele and spina bifida.
Sacrococcygeal teratomas(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.268
117
Tumor of the adrenal medulla composed of small, primitive-appearing cells with dark nuclei, scant cytoplasm, and poorly defined cell borders growing in solid sheets within a finely fibrillar matrix. Rosettes can be found in which tumor cells are concentrically arranged about a CENTRAL SPACE FILLED with neuropil.
Neuroblastomas(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.269
118
This is used in the screening of patients with neuroblastoma.
Urinary vanillylmandelic acid and homovanillic acid (VMA/HVA)(TOPNOTCH)
119
Differentiated lesions containing more large cells with vesicular nuclei and abundant eoinophilic cytoplasm, in the absence of neuroblasts, usually accompanied by mature spindle shaped Schwann cells.
Ganglioneuroma(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.270
120
Disseminated neuroblastoma with multiple cuteaneous metastases with deep blue discoloration to the skin.
"Blueberry muffin baby"(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.270
121
This tumor is composed of small, round cells with large hyperchromatic nuclei and scant cytoplasm, with characteristic structures consisting of clusters of cuboidal or short columnar cells arranged around a CENTRAL LUMEN. The nuclei are displaced away from the lumen, which appears to have a limiting membrane.
Retinoblastoma(Differentiate with neuroblastoma)(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.271
122
Rosettes in retinoblastoma are called _______.
Flexner-Wintersteiner rosettes(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.271
123
Clinicial findings include poor vision, strabismus, whitish hue to the pupils ("cat's eye reflex"), pain and tenderness to the eye.
Retinoblastoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.271
124
Most common primary tumor of the kidney in children.
Wilm's tumor / Nephroblastoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.271
125
Components of the WAGR syndrome.
Wilm's tumorAniridiaGenital abnormalitiesMental retardation(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.272
126
Presents grossly as a large, solitary, well-circumscribed mass. On cut-section, tumor is soft, homogenous, and tan to gray, with occasional foci of hemorrhage, cystic degeneration and necrosis.
Wilm's tumor(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.272
127
Microscopically, a combination of blastemal, stromal and epithelial cell types is observed. (Triphasic combination) Blastemal components described as sheets of small blue cells with few distinctive features. Stromal cells are fibrocytic or myxoid in nature. Epithelial cells take the form of abortive tubules or glomeruli.
Wilm's tumor(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.272
128
Associated with inactivation of the WT1 gene of chromosome 11p13.
WAGR syndrome and Denys-Drash syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed p.272
