Chapter 7: Tumor syndromes Flashcards
MEN1
(Wermer syndrome)
Autosomal dominant activation of MEN1 (chr 11q13).
Pituitary adenoma (or hyperplasia) Parathyroid hyperplasia Pancreatic endocrine neoplasms
MENIIA
(Sipple syndrome)
Autosomal dominant activation of RET (chr 10q11)
Medullary thyroid carcinoma
Parathyroid hyperplasia
Pheochromocytoma
MENIIb (III)
(Gorlin syndrome)
Autosomal dominant activation of RET (Chr 10q11)
Medullary thyroid carcinoma
Pheochromocytoma
Diffuse ganglioneuromatosis of the GI tract
Marfanoid body habitus
Neurofibromatosis type I
(von Recklinghausen disease, peripheral neurofibromatosis)
AD loss of neurofibromin (Chr 17q11.2)
Neurofibromas (especially plexiform, diffuse, MPNST)
Optic nerve gliomas (pilocytic astrocytoma)
Cafe au lait spots, lisch nodules
Ampullary somatostatinoma, duodenal paraganglioma, GIST, pheochromocytoma, JXGA
Neurofibromatosis type II
(Central/acoustic neurofibromatosis)
AD/sporadic loss of Merlin (chr 22q12)
Bilateral acoustic schwannomas
Meningiomas
Spinal cord ependymomas
Cafe au lait spots but no lisch nodules
Tuberous sclerosis
(Bourneville’s disease)
AD loss of TSC1 (Hamartin, 9p34) or TSC2 (Tuberin, 16p13)
PEComas (renal AML, pulmonary LAM)
CNS: Cortical tubers, SEGA
Cardiac rhabdomyoma
Skin: Angiofibroma, periungual fibroma, shagreen & ash-leaf patches
Sturge-Weber
Unknown cause
Port-wine stain (Nevus flammeus) in trigeminal nerve distribution
Pheochromocytoma
Leptomeningeal angiomatosis
Von Hippel-Lindau
AD loss of VHL (3p25)
Clear cell RCC
Hemangioblastoma (cerebellar, spinal, retinal)
Pheochromocytoma
Multiple liver/pancreas/kidney cysts
Clear cell pancreatic islet cell tumor
Papillary cystadenomas
Endolymphatic sac tumor of the ear (Heffner)
Birt-Hogg-Dube
AD loss of BHD/folliculin (17p11.2)
Renal tumors (RCCs, oncocytomas, hybrids)
Facial fibrofolliculomas and skin tags
Lung cysts/blebs
Beckwith-Wiedemann
Sporadic or AD duplication of paternal 11p15.
Overgrowth (hemihypertrophy, macroglossia, organomegaly)
Childhood neoplasms: Wilm’s, hepatoblastoma, pancreatoblastoma, neuroblastoma.
WAGR
Somatic deletion of WT1 (11p13)
Wilms tumor
Aniridia
GU abnormalities
Retardation
Denys-Drash
Somatic WT1 point mutation (11p13)
Wilms tumor (more than WAGR) Gonadoblastoma Diffuse mesangial sclerosis
Hereditary papillary renal cell cancer
AD MET (7q34)
Multiple bilateral PRCCs (type I)
Hereditary leiomyoma and renal cell carcinoma
AD fumarate hydratase (1q42-43)
PRCC (type 2) and leiomyomas with distinct cytologic features.
McCune-Albright
GNAS1 mosaicism (20q13)
Fibrous dysplasia of bone
Cafe au lait spots
Endocrine abnormalities: Precocious puberty, gigantism, cushing’s, thyrotoxicosis
Mazabraud’s syndrome
Somatic activating GNAS1 (20q13)
Fibrous dysplasia
Soft tissue myxoma
Ollier’s syndrome
Somatic PTH1R(?) (3p21-22)
Multiple enchondromas (enchondromatosis) Increased risk of chondrosarcomas
Maffucci syndrome
Somatic PTH1R mutations (?) (3p21-22)
Multiple enchondromas (enchondromatosis)
Soft tissue hemangiomas
Increased risk of chondrosarocma+angiosarcoma
Familial adenomatous polyposis
APC (5p21)
Intestinal adenomas (requires colectomy to avoid CRC) PTC, cribriform-morular variant Juvenile nasopharyngeal angiofibromas
Gardner’s syndrome
APC (5p21)
All features of FAP, as well as:
Soft tissue tumors (Fibromatosis, osteomas, nuchal fibroma)
Skin lesions (Epidermoid cysts, pilomatricomas)
Dental abnormalities: Unerupted teeth, supernumerary teeth
Turcot’s syndrome
PMS2! (kind of FAP, kind of HNPCC)
All features of FAP, as well as:
Meduloblastomas
HNPCC
(mutations & frequency only)
hMLH1 (40%) - 3p21
*more often sporadic*
hMSH2 (40%) - 2p22
hMSH6 (10%) - 2p16.3
PMS2 (5%) - 7p22.1
EPCAM (5%)
*affects MSH2*
HNPCC
(tumors)
Colorectal (80%)
Endometrium (60%)
Ovary (12%)
Stomach, pancreatobiliary, small bowel
Upper tract urothelial (with inverted growth)
Brain
Skin (sebaceous adenomas, keratoacanthomas)
MYH-associated polyposis (MAP)
AutRec MYH (Y165C, G382D)
Like an attenuated FAP (fewer polyps, extracolonic features).
Hereditary diffuse gastric cancer syndrome
AutDom CDH1 (loss of E-cadherin via promoter hypermethylation)
Diffuse gastric cancer, lobular breast cancer.
Peutz-Jegher syndrome
AutDom STK11/LKB1 (19p13)
GI hamartomatous polyps, GI malignanies
Reproductive organ malignancies (Adenoma malignum of uterine cervix, SCTAT, large cell calcifying sertoli cell tumor)
Breast, lung
Mucocutaneous pigmented macules
Juvenile polyposis
AutDom SMAD4/DPC4, PTEN, or BMPR1A
Multiple juvenile polyps involving the entire GI tract.
Cronkhite-Canada
Non-familial. Unknown cause?
GI polyposis; hyperplastic in stomach and cystically dilated and edematous elsewhere. CRC-associated.
Alopecia, macular skin hyperpigmentation, nail dystrophy
Ruval-Caba-Myrhe-Smith
(Bannayan-Riley,Ruvalcaba)
AutDom PTEN (10q23)
GI: Hamartomatous polyps
Lipomas, hemangiomas
Macrocephaly
Hereditary breast and ovarian cancer
(both types)
BRCA1 (17q21): Breast (especially medullary) and ovarian (STICs)
BRCA2 (13q): Breast, ovarian, male breast/prostate, pancreas
Cowden’s disease
(Multiple hamartoma syndrome)
AutDom PTEN (10q)
Multiple hamartomas and cancers.
Breast (often bilateral)
Skin facial trichilemmomas, hypopigmentation, epidermoid cysts
Lots of goddamn tumors in general geez
Familial atypical multiple mole melanoma syndrome
AutDom p16 (9p21)
Hundreds of nevi, including dysplastic (risk of melanoma)
16x risk of pancreatic adenocarcinoma
Gorlin’s syndrome
(nevoid basal cell carcinoma syndrome)
AutDom/Sporadic PTCH (2q22.3-q31)
2+ BCCs before age 20
OKC of the jaw
Ovarian fibroma
Medulloblastoma
Skeletal and congenital malformations
Li-Fraumeni
AutDom p53 (17p13)
Multiple sarcomas, carcinomas, leukemias, melanomas, and gliomas at a young age.
Ataxia-telangiectasia
AutRec ATM (11q22-23)
100x risk of ALL (children) and solid tumors (adults).
Progressive ataxia, telangiectasias, IgA deficiency.
Sensitivity to ionizing radiation.
Bloom syndrome
AutRec BLM helicase (chr 15)
Widespread predisposition to cancers, especially leukemias
Various developmental defects
Fanconi anemia
AutRec, polygenic
Predisposition to leukemias and solid tumors (HCC).
Hypoplasia of bone marrow, kidney, spleen
Absent thumbs and radii
Carney complex
AutDom PKA (17q22, 2p16)
Myxoid lesions (cardiac, skin, breast fibroadnoma)
Pigmented and calcifying lesions (epithelioid blue nevus, pigmented nodular adrenocortical hyperplasia, psammomatous melanotic schwannoma, large cell calcifying sertoli cell tumor)
Endocrine hyperactivity (pituitary adenoma, chondroid hamartoma)