www.medskool.com
 

Google
 
Web www.MedSkool.Net
 
http://www.medskool.net/index.html
http://www.medskool.net/circulatory/index.html
http://www.medskool.net/excretory/index.html
http://www.medskool.net/integumentary/index.html
http://www.medskool.net/reproductive/index.html
http://www.medskool.net/respiratory/index.html
 
 
 
 
 
 
 
 

 

 
 

Sexually Transmitted Diseases

 

  Infections of the Vulva and Sexually Transmitted Diseases are very important clinically and primarily manifest as painless ulcers. Also, we are guaranteed to see a few in the course of our medical education

a.       Syphilis, an Sexually Transmitted Diseases is caused by Treponema pallidum, a gram-negative spirochete

                                                               i.      Symptoms are divided as follows and is dependent on how long you have been infected:

1.      Primary à Chancre = classic ulcer seen with Syphilis; painless ulcer with the clean borders
 

 

syphillis

1.       Secondary à Condyloma latum (DO NOT CONFUSE with Condyloma acuminatum or genital warts– two completely different conditions) = secondary syphilitic eruption of flat-topped papules at the anus or wherever contiguous folds of skin produce heat and moisture

 2.       Tertiary à Gummas (granulomatous)

                                                             ii.      Histology à Plasma cells clustering around blood vessels although not a definitive diagnosis

b.       Chancroid à STD

                                                               i.      Caused by Hemophilus ducreyi, a gram negative bacillus

                                                            ii.      Presents clinically as painful ulcers

                                                            iii.      Less common in the US

 chancroid

 c.       Granuloma inguinale à

                                                               i.      Caused by Calymmatobacterium granulomatis, a gram negative rod

                                                             ii.      Can form a painless ulcer

                                                            iii.      Donovan bodies (organisms within macrophages; according to Dr. Heller they look like safety pins) on Wright/Giemsa are diagnostic

 

d.       Chlamydia à

                                                               i.      Causes 2 different types of STDs

1.       Non-gonococcal urethritis

a.       More common

b.       Caused by Chlamydia of serotypes D – K

c.       Begins with inguinal swelling

2.       Lymphogranuloma venereum (LGV)

a.       Caused by serotypes L1, L2 & L3

b.       Not very common          

                                                             ii.      Outcomes of Chlamydia infections

1.       Draining sinuses

2.       Ulcers

3.       Fibrosis

4.       Malignant potential = vulvar cancer later on

e.       Chlamydia that we are going to see with and presents similarly to Gonorrhea:

                                                               i.      Men are symptomatic (burning, dysuria, discharge)

                                                             ii.      Women are asymptomatic = bad since can get an ascending infection that results in scarring of the tubes

                                                            iii.      Causes of Pelvic Inflammatory Disease (PID), infertility due to scarring of the fallopian tubes, and increased risk of tubal pregnancies (can result in death)

f.         Herpes à

                                                               i.      Type I or II

                                                             ii.      May be contagious without lesions

                                                            iii.      High neonatal risks especially if child is vaginally delivered since child can get overwhelming herpes sepsis and die– opt for C-section if mother has active infection

                                                            iv.      Can occur as primary and recurrent attacksà first time with clinical infection is usually painful resulting in urinary retention (patients were placed in a bath and told to urinate into the water for treatment of urinary retention); recurrent attacks are less difficult

                                                              v.      Diagnosed by characteristic intranuclear inclusions that have two different characteristics

1.       Cowdry’s type A inclusions = multinucleated with ground glass appearance best seen on a glass slide = classic herpes

 herpes cowdry type a inclusion bodies

2.       Multinucleated inclusion bodies

g.       Human papillomavirus à

                                                               i.      There are ~100 types (with more constantly being discovered constantly) with 60 affecting the lower genital tract of both men and women

                                                             ii.      Both men and women are asymptomatic with women more likely to show signs of infection

                                                          iii.      HPV 6, 11 = causes Condyloma acuminatum or genital warts

1.       Low risk or not likely to progress to cancer

2.       Causes warts on the vulva 

                                                           iv.      HPV 16, 18 = cause 100% of the cervical cancers

1.       High risk for pre- and invasive neoplasms

2.       Not all relate to genital diseases

                                                              v.      HPV facts (she stressed that we do not have to memorize the numbers; simply appreciate them)

1.       One of the 3 most common STDs along with Gonorrhea and Chlamydia

2.       History of HPV: Was believed to arise from “impure” coition in the 1700s; differentiated from Syphillis and Gonorrhea in the 1800s. Summation = it has been with us for a long while

3.       20-40% of sexually active women have HPV à not all of them associated with warts or cancers since most healthy individuals clear the virus from their bodies within 2 years

4.       5.5 million new infections/yr in US = it is all over the place

5.       Estimated total prevalence in US is 20 million

a.       1950s 13/100,000 US women had warts

b.       1970s 106/100,000 US women had warts (free love anyone)

c.       Currently estimated to affect 20-50% of sexually active women

6.       Once HPV gets into the cell it can manifest as these 2 basic formsà

a.       Episomal-nonintegrated, productive infection (warts) = it is in the car but it is not the driver (Dr. Heller’s analogy); someone infected can still pass it on to his/her partner

b.       Integrated into host DNA-nonprodctive infection (malignant potential) = it is the driver of the car and can steer the wheel (again, Dr. Heller’s analogy)

7.       Virtually all HPV infection disappears and is non-detectable by PCR, usually within 2 yrs

8.       The mechanism of latency and re-emergence is less well-known but it occurs with HPV nevertheless so you cannot blame your significant other for cheating on you since he/she may have contracted it before he/she met you.

9.       You can get HPV from other methodologies other than sexual intercourse

10.   If children present with HPV infection think sexual abuse although a mother who is not hygienically clean can pass it on to her child after diapering, etc.

11.   Can also present in the perianal region of both men and women. Dr. Heller was not sure if this was related to sexual practices although homosexual men often present with warts in this area more frequently

                                                           vi.      Risk factors for HPV genital infection

1.       Exposure to virus

2.       Immune status – HIV+ patients find it difficult to eradicate due to immunosuppression

3.       Pregnancy – possibly due to hormonal status and transient immunosuppression (the facts are still undiscovered)

4.       Long-term OCP use that causes increased estrogen and progesterone receptors (ER & PR)

5.       Nutritional status – you need to be well-nourished to fight this infection

                                                           vii.      Diagnosis

1.       Clinically = lumpy, bumpy

2.       Microscopically

a.       Papillomatosis due to lumpy, bumpy appearance

b.       Koilocytes (Greek word for “empty”) = squamous cells demonstrating nuclear change = a “rasionoid” nuclei (enlarged) = present with perinuclear halo or space as a result of both the cells’ naturally high glycogen storage capacity (space-occupying) and the nuclear activities

 hpv koilocytes

c.       KI-67 = a proliferation antigen used to stain HPV = a confirmatory diagnosis of Condyloma a. if proliferation occurs in the basal region of the epithelium


Back to the Reproductive System Index

 

 


Navigation:

MedSkool.Net Home - Circulatory - Excretory - Integumentary - Respiratory
MedSkool.Net Sitemap
 

 

All Content provided on or through MedSkool.Net (i) is provided for informational purposes only, (ii) is not a substitute for professional medical advice, care, diagnosis or treatment, and (iii) is not designed to promote or endorse any medical practice, program or agenda or any medical tests, products or procedures. The Site does not contain information about all diseases, nor does this Site contain all information that may be relevant to a particular medical or health condition. You should not use any Content for diagnosing or treating a medical or health condition. You should carefully read all information provided by the manufacturers of any products advertised or promoted on or through the Site and displayed on or in the associated product packaging and labels before purchasing and/or using such products. If you have or suspect that you have a medical problem, you should contact your professional healthcare provider through appropriate means. You agree that you will not under any circumstances disregard any professional medical advice or delay in seeking such advice in reliance on any Content provided on or through the Site. Reliance on any such Content is solely at your own risk.    Full Disclaimer

Copyright © 2006 www.MedSkool.Net - All Rights Reserved - Trademarks used herein are property of their respective owners