Classification of Major Tumors

Question 1

rhabdomyoma

Answer 1

rare benign tumor if striated muscle

Question 2

rhabdomyosarcoma

Answer 2

malignancy of striated muscle

Question 3

leiomyoma

Answer 3

benign tumor of smooth muscle

Question 4

chondroma

Answer 4

notochordal remnants that give rise to lobular masses of gelatinous tissues
–most common in basisphenoid & sacrococcygeal region

Question 5

Endochondroma

Answer 5

cartilaginous masses embedded in bone

–multiple = ollier’s disease

Question 6

Codman’s triangle

Answer 6

a zone of reactive bone that forms at angle of periosteal reflection

Question 7

Giant cell tumor

Answer 7

–lytic lesions resembling soap bubbles in epiphyseal regions

Question 8

Ewing’s sarcoma

Answer 8

• -aggressive small cell tumors of marrow
• -~10-15 yrs
• -common in long bones
• -manifestations include: bone lysis, local swelling, tenderness, and systemic finding that resemble infections

Question 9

hemangioma (3)

• capillary
• strawberry
• cavernous **

Answer 9

cavernous masses of large dilated sinusoid-like vessels

–skin, mucous membranes, cetain organs (liver & CNS)

Question 10

glomus body tumors (glomangioma)

Answer 10

painful sensitive benign masses derived from glomus bodies

Question 11

neurilemmoma (schwannoma)

Answer 11

neoplasm of neurilemmal cells

–common location = VIII n & large n trunks

Question 12

multiple neurofibromatosis (MNF) **

Answer 12

type 1 = Von Rechlinghausen’s disease
–numberous pigmented skin = cafe’ au lait spots
pigmented iris hamartomas (Lisch nodules)

type 2 = acoustic neurofibromatosis

• -bilateral acoustic nerve tumors
• -NO Lisch nodules

Question 13

adenomas

Answer 13

arise in ducts and acini of glands

Question 14

adenocarcinoma

Answer 14

variable quantities of fibrous stroma appears w/in this type

1) carcinoma simplex = stroma = parenchymal
2) medullary carcinoma = parenchymal > stroma
3) scirrhous = stroma > parenchymal