Genitourinary Overview

 

I.                     Bladder

a.        Urothelial (Transitional) Cell Carcinoma

b.        Papilloma

c.        Mesenchymyal Tumors of the Bladder

II.                   Testis

a.        Germ Cell Tumors

                                                               i.      Seminoma

                                                             ii.      Non-seminomatous (NSGCT)

1.        Teratoma

2.        Yolk-sac tumor

3.        Embryonal carcinoma

4.        Choriocarcinoma

5.        Intratubular germ cell neoplasia (IGCN)

III.                 Prostate

a.        Benign Prostatic Hyperplasia (BPH)

b.        Prostate Cancer

IV.                 Ovary

a.        Inflammatory Disorders

                                                               i.      Tubo-ovarian abscess (PID)

                                                             ii.      Other Infectious Oophoritis

                                                           iii.      Autoimmune Oophoritis

b.        Endometriosis

c.        Functional Cysts

                                                               i.      Follicular Cysts

                                                             ii.      Luteal Cysts

d.        Polycystic Ovarian Disease

e.        Ovarian Tumors

                                                               i.      Epithelial (Stromal) Tumors

1.        Serous Tumors

2.        Mucinous Tumors

3.        Endometrioid Tumors

4.        Clear Cell Tumors

5.        Transitional (Brenner) Tumors

                                                             ii.      Germ Cell Tumors

                                                           iii.      Sex-Cord Tumors

1.        Granulasa-Theca Cell Tumors

2.        Fibrothecoma and Fibromas

3.        Sertoli-Leydig Cell Tumors

                                                            iv.      Metastasis Tumors

V.                   Fallopian Tube

a.        Salpingitis

b.        Ectopic Pregnancy

c.        Paratubal cyst

d.        Adenomatoid Tumor

e.        Adenocarcinoma

VI.                 Uterus

a.        Non-neoplastic (Endometrial)

                                                               i.      Anovulatory Cycle

                                                             ii.      Luteal Phase Defect

                                                           iii.      Endometritis

                                                            iv.      Polyps

                                                              v.      Adenomyosis

b.        Neoplastic (Endometrial)

                                                               i.      Endometrial Hyperplasia

                                                             ii.      Adenocarcinoma

1.        Endometrioid Carcinoma

2.        Serous Carcinoma

                                                           iii.      Malignant Mixed Mullerian Tumor (MMMT)

                                                            iv.      Endometrial Stromal Tumors

c.        Neoplastic (Myometrial)

                                                               i.      Leiomyoma

                                                             ii.      Leiomyosarcoma

d.        Gestational Trophoblastic Disease (GTD)

                                                               i.      Hyatidiform Mole

                                                             ii.      Choriocarcinoma

VII.               Cervix (part of the uterus)

a.        Non-Neoplastic Diseases

                                                               i.      Cervicitis

                                                             ii.      Endocervical Polyps

b.        Neoplastic Diseases

                                                               i.      Condyloma Acuminatum

                                                             ii.      Cervical Intraepithelial Neoplasia (CIN)

                                                           iii.      Squamous Cell Carcinoma

                                                            iv.      Adenocarcinoma

                                                              v.      Clear Cell Carcinoma

VIII.             Vagina

a.        Non-Neoplastic Diseases

b.        Neoplastic Diseases

                                                               i.      Benign Tumors

                                                             ii.      Vaginal Intraepithelial Neoplasia (VAIN)

                                                           iii.      Squamous Cell Carcinoma

                                                            iv.      Adenocarcinoma

                                                              v.      Embryonal Rhabdomyosarcoma (sarcoma botryoides)

IX.                 Vulva

a.        Non-Neoplastic Diseases

                                                               i.      Bartholin gland cysts

                                                             ii.      Vestibulitis

                                                           iii.      Leukoplakia

1.        Inflammatory Dermatoses

a.        Lichen Sclerosus

b.        Squamous Hyperplasia (Dystrophy)

b.        Neoplastic Diseases

                                                               i.      Papillary Hidradenoma

                                                             ii.      Condyloma Acuminatum

                                                           iii.      Vulvar Intraepithelial Neoplasia

Squamous Cell Carcinoma

                                                            iv.      Extramammary Paget’s disease

                                                              v.      Melanoma


Genitourinary Overview

 

I.                     Bladder

 

Low Grade

High Grade

Polarity maintained

Loss of polarity

Cells not crowded

Cellular crowding

Minimaly nuclear atypia

Nuclear atypia

Rare (basilar) mitoses

Increased mitoses

Treatment: resection only

Larger, higher grade:

- transurethral resection

- intravesical chemotherapy (in bladder)

Treatment: radical cystectomy/cystoprostatectomy

 

a.        Urothelial (Transitional) Cell Carcinoma

90% of all bladder neoplasms

50-80 yo, M:F=3:1

Risk factors: smoking, occupational (2-naphthlamine), cyclophosphamide, Middle East (Schistosoma Haematobium)

Symptoms: hematuria

Diagnosis: cystoscopy with biopsy/transurethral resection

b.        Papilloma

benign (covered with normal urothelium): not the same as carcinoma in situ

rare (1% of epithelial bladder tumors)

c.        Mesenchymyal Tumors of the Bladder

pediatric; most common: rhabdomyosarcoma (small round blue cells)

adults: leiomyosarcoma

II.                   Testis

a.        Germ Cell Tumors

most common testicular tumor (95%)

symptoms: painless testicular masss

spread: retroperitoneal lymphatics

epidemiology: Caucasian, cryptorchidism (intra-abdominal), familial (chromosome 12)

- 0-4yo (yolk sac, teratoma)

- 15-35yo (testicular tumors  are most common type of malignant neoplasm for this age range)

                                Treatment: orchectomy and:

 

 

Chemosensitive

Radiosensitive

Seminoma

Yes

Yes

Non-seminomatous

Yes

No

 

                                                               i.      Seminoma

often pure, lobulated, fleshy pink-gray; confined to testis, Wilm’s-like

histology: solid sheets, clear cytoplasm, prominent nucleoli (“fried egg” cell pattern)

                                                             ii.      Non-seminomatous (NSGCT)

usually not pure, hemorrhagic

1.        Teratoma

except for rare dermoid cyst subtype, has  poor  prognosis (worse than ovarian teratoma)

tan gray, cystic

occurs in pure form in childhood

2.        Yolk-sac tumor

has metastatic potential

marker: AFP (marks epithelial, but not stromal)

gross: yellow

3.        Embryonal carcinoma

4.        Choriocarcinoma

5.        Intratubular germ cell neoplasia (IGCN)

tumor marker: PLAP (placental alkaline phosphatase)

III.                 Prostate

a.        Benign Prostatic Hyperplasia (BPH)

extremely common (increases with age)

etiology: serum testosterone drop (estrogen conversion in peripheral tissues) à increased androgen receptos

location: periourethral transition zone (TZ) (may not be palpable on digital rectal exam)

may à urinary obstruction (incomplete voiding, hesitancy dribbling à bladder musculature hypertrophy, renal failure)

treatment: transurethral resection of prostate (TURP)

BPH is not a precursor for cancer

b.        Prostate Cancer

second most common cancer in males (1st: skin)

second leading cause of cancer death in males (1st: lung)

tendency to die “with” rather than “from”

Gleason grading system: well-differentiated à poorly differentiated (primary+secondary score: 1 through 5 + 1 through 5)

location: 60-80% are in peripheral zone (PZ) = PIN (prostatic intraepithelial neoplasia)

diagnosis: transrectal biopsy after suspicious DRE and/or elevated PSA

spread: perineural invasion, lymphatic (pelvic) à bone (osteoblastic mets)

IV.                 Ovary

a.        Inflammatory Disorders

rare; associated with infertility

                                                               i.      Tubo-ovarian abscess (PID)

                                                             ii.      Other Infectious Oophoritis

                                                           iii.      Autoimmune Oophoritis

b.        Endometriosis

= presence of endometrial tissue (responsive to hormonal cycle) in sites other than uterus

hemorrhagic “chocolate” cysts à adhesions

histology: (2 of the following 3) 1) endometrial glands; 2) endometrial stroma; 3) hemosiderin pigment

sites (decreasing frequency): ovaries, uterine ligaments, rectovaginal septum, peritoneum...umbilicus, vagina vulva, GI, pleura

epidemiology: reproductive age, infertility, pelvic pain, abnormal bleeding, dysmenorrheal

theories of pathogenesis: 1) regurgitation; 2) metaplasia; 3) lymphovascular dissemination

c.        Functional Cysts

                                                               i.      Follicular Cysts

usually multiple (unruptured graafian follicles, sealed rupture follicles)

clear serous fluid

                                                             ii.      Luteal Cysts

enlarged corpus luteum

distinct bright yellowàorange lining (composed of luteinized granulose cells)

d.        Polycystic Ovarian Disease (PCOD)

bilateral ovarian enlargement

associated: obesity, hursuitusm, virilism, oligomenorrhea

appearance enlarged ovaries, numerous cystic follicles, fibrous cortical thickening

may à endometrial hyperplasia, carcinoma (unopposed estrogen stimulation)

e.        Ovarian Tumors

80% are benign

third most common gynecological cancer

risk factors, BRCA1, BRCA2, older age, nulliparity, gonadal dysgenesis

oral contraceptives have a protective effect

symptoms: pain, increasing girth, ascites, vaginal bleeding

most common metastatic primary sites: opposite ovary, endometrium, colon, pancreas, stomach, breast

                                bilateral metastatic tumor to ovaries from GI origin: Krukenberg tumor (signet ring cells)

                                                               i.      Surface Epithelial (Stromal) Tumors

most common benign and malignant ovarian tumor

spread: penetrating ovarian capsule à peritoneal surface spread, lymphatic à lungs, pleura, liver

marker: CA-125

1.        Serous Tumors

most common epithelial tumor (most: benign)

often bilateral, unilocular

benign: simple; malignant: complex (papillary, solid areas, necrosis)

2.        Mucinous Tumors

most: benign (rarely bilateral)

multilocular

two subtypes: gastriointestinal (pseudomyxoma peritonei), endocervical

3.        Endometrioid Tumors

most: malignant (frequently bilateral)

association: endometriosis, synchronous endometrial carcinoma (15-30%)

4.        Clear Cell Tumors

malignant, highly aggressive

5.        Transitional (Brenner) Tumors

most: benign, adenofibromatous

                                                             ii.      Germ Cell Tumors

second most common ovarian tumor

usually in pure form (unlike in testes)

1.        Teratoma

most common GCT in ovary

cystic, ectodermal (hair, teeth, bone = dermoid cyst)

rarely of just one tissue type (if so, most commonly: thyroid = struma ovarii (if functionalàhyperthyroidism), neuroendocrine = carcinoid)

2.        Dysgerminoma


seminoma” of the ovary

3.        Yolk Sac

4.        Choriocarcinoma

                                                           iii.      Sex-Cord Tumors

least common ovarian tumor

arise from stromal (fibroblasts, smooth muscle cells)

1.        Granulosa-Theca Cell Tumors

post-menopausal, unilateral, “coffee bean nuclei”

2.        Fibrothecoma and Fibromas

common in patients with Basal-Cell Nevus Syndrome

association with ascites and right sided pleural effusion (Meig’s syndrome)

3.        Sertoli-Leydig Cell Tumors

may produce androgens (analogous to testicular form)

                                                            iv.      Metastasis Tumors

 

V.                   Fallopian Tube

a.        Salpingitis

inflammation (component of PID)

b.        Ectopic Pregnancy

fallopian tube: most common site

usually à hemorrhage, rupture (peritoneal cavity) à shock

potential medical emergency

c.        Paratubal cyst

small, unilocular

very common

Hydatid cyst of Morgagni: large mullerian duct remnant cyst

d.        Adenomatoid Tumor

ß mesothelium (benign)

e.        Adenocarcinoma

rare (more commonly: secondarily involved)

VI.                 Uterus (body)

normal uterus: cervix, intermediate zone, body (corpus)

body: myometrium, endometrium

formed from fusion of mullerian ducts

classic manifestation of uterine disease: “abnormal uterine bleeding”

        - menorrhagia: excessive bleeding during menses

        - metrorrhagia: bleeding between menses

        - menometrorrhagia: (both)

functional disorders account for majority = dysfunctional uterine bleeding (DUB)

a.        Non-neoplastic (Endometrial)

                                                               i.      Anovulatory Cycle

most common cause of DUB

lack of ovulationà “unopposed” estrogen stimulation

(with ovulation, progesterone is produced by ovary)

if chronic à endometrial hyperplasia

                                                             ii.      Luteal Phase Defect

                                                           iii.      Endometritis

usually bacterial

may be acute (uncommon) or chronic (associated with PID)

signs and symptoms (chronic); abnormal bleeding, pain, discharge, infertility

biopsy: plasma cells, etc.

                                                            iv.      Polyps

non-neoplastic; posterior wall of the uterine cavity

estrogen-responsive; may à abnormal bleeding

                                                              v.      Adenomyosis

endometrial glands and stroma within myometrium

diffuse uterine enlargement

not always symptomatic

b.        Neoplastic (Endometrial)

                                                               i.      Endometrial Hyperplasia

increased gland:stromal ratio

related to prolonged exposure to estrogen in absence of progesterone

(conditions with increased estrogen: anovulatory cycles, obesity, PCOD, granulosa cell tumors, tamoxifen therapy)

perimenopausal women

atypical hyperplasia: precursor for endometrioid adenocarcinoma

                                                             ii.      Adenocarcinoma

1.        Endometrioid Carcinoma

most common gynecological cancer

risk factors: obesity, diabetes, hypertension, infertility

decreased incidence among smokers

pathogenesis: unopposed estrogen stimulation à hyperplasia

(is the reason why birth control/hormone replacement includes progesterone)

spread: myometrium invasion à pelvis (direct continuity)

2.        Serous Carcinoma

less common; not associated with hyperestrinism or hyperplasia

similar/identical to ovarian serous tumors

p53 mutations;

                                                           iii.      Malignant Mixed Mullerian Tumor (MMMT)

highly aggressive (epithelial and mesenchymal)

= carcinosarcoma

may show differentiation toward native or non-native uterine elements

                                                            iv.      Endometrial Stromal Tumors

1.        stromal nodule (benign)

2.        stromal sarcoma (malignant)

c.        Neoplastic (Myometrial)

                                                               i.      Leiomyoma

benign tumors of smooth muscle (does not à malignant)

common (30% of menstruating women over 30); often multiple

can be serosal, submucosal (form which à infertility), intramural

characteristic “whorled” appearnace

                                                             ii.      Leiomyosarcoma

often solitary; larger than benign, hemorrhagic, necrotic, mitotic figures

may be STUMP (smooth muscle tumors of uncertain malignant potential)

d.        Gestational Trophoblastic Disease (GTD)

extremes of reproductive age

epidemiology: Asia, Latin America, Middle East (1 in 100)

                                                               i.      Hyatidiform Mole

molar pregnancy

complete mole: no maternal chromosomes, no embryonic development, 90% are 46XX

partial mole: usually triploid (69XXY); rarely: tetraploid (92XXXY); fertilization of egg by two sperm; embryo may develop

pathology: edematous villi (“clusters of grapes”)

                                                             ii.      Choriocarcinoma

rare, malignant, derived from syncytio- and cytotrophoblasts during pregnancy

no villi; often presents with metastases to lung, vagina, bone, brain

aggressive, but high rate of cure: chemotherapy

VII.               Cervix (part of the uterus)

squamocolumnar junction: transition from squamous epithelium to columnar external cervical os

a.        Non-Neoplastic Diseases

                                                               i.      Cervicitis

1.        chronic cervicitis

results from proliferation of squamous mucosa à obstruction of glandular crypt openings

essentially universal in reproductive age women; asymptomatic

2.        acute cervicitis

etiologic agents: chlamydia, gonococcus, mycoplasm, Herpes Virus 2, trichomonas, candida

                                                             ii.      Endocervical Polyps

non-neoplastic proliferation of fibrous stroma

b.        Neoplastic Diseases

                                                               i.      Condyloma Acuminatum

= venereal wart

sexually transmitted (HPV 6,11)
condylomas are not considered pre-malignant

                                                             ii.      Cervical Intraepithelial Neoplasia (CIN)

(HPV 16,18: E6, E7 à RB)

PAP smear screens for this

risk factors: number of partners, age of sexual initiation, promiscuity of male partner, smoking

arise at squamocolumnar junction

(lowest grade: indistinguishable histologically from condyloma; majority of low grade lesions regress)

CIN I, CIN II, CIN III (related to epithelial thickness)

                                                           iii.      Squamous Cell Carcinoma

second most common cancer in women world-wide (1st: skin cancer)

risk factors: same as for CIN

spread by local extension

most deaths are from complications of local extension (e.g. urinary obstruction)

                                                            iv.      Adenocarcinoma

increasing in incidence; also related to HPV (18)

                                                              v.      Clear Cell Carcinoma

most occur in women exposed in utero to DES

median age: 19; survival: 90%

VIII.             Vagina

a.        Non-Neoplastic Diseases

rare; Gartner’s duct cysts (Wolffian duct), mucous cysts, endometriosis

b.        Neoplastic Diseases

                                                               i.      Benign Tumors

leiomyoma, hemangioma, rhabdomyoma, non-neoplastic stromal polyps

                                                             ii.      Vaginal Intraepithelial Neoplasia (VAIN)

HPV-related

                                                           iii.      Squamous Cell Carcinoma

rare, HPV-related

                                                            iv.      Adenocarcinoma

                                                              v.      Embryonal Rhabdomyosarcoma (sarcoma botryoides)

IX.                 Vulva

histology: identical to skin

a.        Non-Neoplastic Diseases

                                                               i.      Bartholin gland cysts

result from obstruction of Bartholin duct (prior infection)

                                                             ii.      Vestibulitis

inflammation of glands at posterior introitus

                                                           iii.      Leukoplakia

1.        Inflammatory Dermatoses

a.        Lichen Sclerosus

postmenopausal

pale, parchment-like areas of skin

b.        Squamous Hyperplasia (hyperplastic dystrophy)

2.        Neoplastic diseases

VIN, SCC, Paget’s

b.        Neoplastic Diseases

                                                               i.      Papillary Hidradenoma

benign

arise from modified apocrine sweat glands

                                                             ii.      Condyloma Acuminatum

see above

                                                           iii.      Vulvar Intraepithelial Neoplasia (VIN)

related to HPV infection; associated with synchronous squamous neoplasm of cervix or vagina

                                                            iv.      Squamous Cell Carcinoma

HPV 16, 18

risk factors: lichen sclerosis, squamous hyperplasia

                                                              v.      extramammary Paget’s disease

analogous to Paget’s disease of the breast

unlike Paget’s disease of the nipple, is usually confined to epidermis

                                                            vi.      Melanoma