Dr. Malcolm Mackenzie

Gynecology
Lexington, MA
29 years experience

Locations

Lexington ObGyn Associates

Lexington, MA

Address

57 Bedford Street, Suite 205, Lexington, MA
Directions

About

Bio

Tell us about your background, specialties, interests...

Specialties
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.

Gynecology

Obstetrics and Gynecology

Languages spoken

English

Doctor Q&A

55 Answers
0 Agrees
The number of answers this doctor has agreed with.
A 25-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Sort of: If you look up the theory of "muellerianosis" - this indicates that endometriosis is laid down during the early embryo development and awaits stimulat... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Most likely normal.: Mirena (levonorgestrel) wont stop your ovaries from going through its normal production of estrogen and Progesterone even though there is no period. S... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Fibrocystic changes: Fibrocystic changes of the breast (used to be called fibrocystic disease - but when 40% of women have it, how can you call it a disease) are a hormona... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 25-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Sadly, no chance.: What you describe as a "chocolate cyst" is what is known as an endometrioma - endometriosis within the ovary that then menstruates every month based u... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Yes..... however...: The more severe the endometriosis, the more likely there can be some scarring of the tubes. As well, just having endometriosis can cause a decrease i... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 20-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Yes - absolutely: Missing a dose will not make an appreciable difference in the success of the treatment.
Created for people with ongoing healthcare needs but benefits everyone.
A 42-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
All NSAIDS can help: The endometriosis you have will cause pain and all the treatments basically can help diminish the activity of the endometriosis and thus diminish the ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 22-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Surgery perhaps: It is likely if you have endometriosis that you have deep infiltrating endometriosis just behind the the uterus. This is possibly causing the pain wi... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 48-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Yes: The normal vaginal environment - ie a microenvironment that has low levels of bacteria and yeast/fungus - is maintained by a very high acidity level ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Not necessarily: Endometriosis being a cause of inflammation certainly could be related to an increase in c-reactive protein (itself a measure of inflammation somewher... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 27-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Absorption ok: At 16 wks along in a pregnancy, you are, i presume, taking the Progesterone to prevent preterm delivery (the other reason to take Progesterone is to ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Most likely yes: Acidophilus ("acid-loving" and "acid-producing") bacteria can potentially return the environment of the vagina to a very acid environment - normally a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 28-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Yes: Your symptoms of pain and blood in the urine is strongly suggestive of endometriosis in the bladder or more likely in the wall of the bladder. Someti... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 16-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Endometriosis?: Given that you have these symptoms every time you have your period makes this sounds so much like you have endometriosis in the vagina. More unlikely... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Possibly if on BCP's: Taking antibiotics alters the absorption of birth control pills (the estrogen and progesterone) through your intestine and consequently if you are on... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 24-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Sadly not much: Given that endometriosis pain is basically caused by the inflammation that is associated with active endometriosis, either antiinflammatory medication... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 24-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Yes possibly: Obviously speculum exams involve placement of the instrument within the vagina - first through the pelvic floor muscles (called the kegels muscles) an... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
It doesn't grow back: The theory that endometriosis is caused by menstruation cells spilling backwards through the tubes into the pelvic cavity - sampson's theory - has bee... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Polycystic ovaries?: Not 100% sure, but look up "pcos". Physiological cysts in the ovary are normal.Each month, the brain signals your ovary to release an egg.After ovulat... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Be cautious: While all testing may be all "negative" ie nothing that shows cancer, an ablation involves burning the inside of the uterus causing scarring and "glue... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
No: There are all sorts of " microorganisms" - ie "bugs" that live in, on or around us and that occasionally cause infections. One major type of microorg... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 28-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Around 7 days: Every month at the start of the menstrual cycle (day 1 at the start of the menses) there are @ 1000 eggs each in a follicle cyst too small to be seen.... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
The estrogen level: In the '60s when birth control pills first came out the estrogen level was 80 micrograms of estrogen - they made women nauseated and throw up. Then c... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Always hard to know: All the lab numbers aside, the fact that you have, at the time of the ultrasound, a small fetus with a heartbeat is promising. Regardless, that early... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 49-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Any time is fine: Hormone pills - and i assume you mean estrogen and Progesterone for "hormone replacement therapy" - are absorbed through the intestine going immediat... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 34-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Needs sorting out: Make sure there is not still some pregnancy hormone in the blood - check hcg. If that is negative then need to ask whether the uterus lining (endomet... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Hormones or surgery: Endometriosis is a condition where the cells that line the inside of the uterus are in the wrong place such as on pelvic surfaces; every month these ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Probably not.: Cramping is usually caused by uterine contractions but sometimes what feels like cramping of the uterus is really something to do with the bladder or ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 24-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
At 6 wks no growth: Sadly it appears from what you describe that your pregnancy only grew to 6 wks and then stopped - this is around the time that the most critical struc... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 30-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Probably not related: Endometriosis, while it can really cause a lot of pain over many years does not in and of itself cause fatigue. Certainly the pain can wear one down ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
In some circumstance: Not sure exactly what you mean by "withdrawal bleeding". If you mean that having a menstrual flow by withdrawing the hormones Progesterone and estrog... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 41-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
1-2 weeks: When the estrogen is given directly into the vagina (as a cream, tablet or ring) then it is quite rapid the turnaround in symptoms. The actual vagina... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 47-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Absolutely: Very often however, older women will have not gotten a diagnosis of endometriosis but will have a long history of pain or hard periods and their daugh... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 18-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Generally not: Some very large dermoids create significant mechanical irritation in the pelvis and perhaps this is could cause problems but no, a dermoid wont be a p... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 24-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Needs some labwork: What you are describing is gradually prolonged menstrual cycles. Given that the time from when one releases an egg to when one menstruates is most of... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Possible ectopic: Make sure to check a pregnancy test. If that is possitive then yu need to be seen by a doctor. If not pregnant then it is possible that you have a b... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 26-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
You can conceive: The pain you are having suggests that you might have endometriosis - an ultrasound should be performed to make sure you don't have something like a fi... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 43-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Early testing common: Most pregnant women are screened for gdm (gestational diabetes mellitus) at 28 weeks. Those standards have however changed and screening is often don... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Most likely no worry: The ovary releases the egg during ovulation. The egg released is the one from which women get pregnant. The cyst that released the egg not uncommonly... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Yes: Breast tissue is very sensitive to both estrogen and Progesterone (the female hormones produced by the ovary) and consequently during peak hormone lev... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 27-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Depends type of cyst: Every month, normally, a woman who is not on any hormones will develop an ovarian cyst (2-4 cm) from which she releases an egg - left ovary one month,... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 24-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
This needs an eval.: Multiple reasons for three months of amenorrhea: something affecting the messengers from the brain to the ovary, something affecting the ovary itself,... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 26-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Birth Control Pills: The best actual "treatment" for endometriosis is laparoscopic excision (cutting out) of all endometriosis - remembering that endometriosis can have ma... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 22-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Many things possible: Pain in the lower region indeed could be related to a pregnancy both in or perhaps not in the uterus - worth getting checked. As well, it could be so... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 41-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Absolutely: The inflammation in the pelvis due to endometriosis is often located deep in the pelvis just behind the uterus and cervix which means it is just above... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 28-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
May be ovulatory: With pcos, the ovary tries to produce and release an egg but is unable to really get the egg to release. The ovarian cysts that contain an egg will g... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 45-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Many reasons!: Besides pregnancy, common causes for isolated missed periods in women with previously normal periods include: include perimenopause, premature ovarian... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Not necessarily: The levels of lh (leutinizing hormone) and fsh (follicle stimulating hormone) - the latter sent from the pituitary gland to stimulate the ovary to pro... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
Absolutely: The very fact that the "stone" scraping along on the inner aspect of the ureter (the tube from the kidney to the bladder) causes pain also means that ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old female asked:
Dr. Malcolm Mackenzie
Gynecology 29 years experience
LH/FSH> 2 maybe PCO: Pcos = polycystic ovarian syndrome is really the name for a disruption in the way the ovary works such that the ovary tries to release an egg but just... Read More
Created for people with ongoing healthcare needs but benefits everyone.

Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

2
Recommendations
98
Thank you notes
HealthTap member
Mar 30, 2015
Dr. Mackenzie is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Mar 31, 2015
Dr. Mackenzie is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Thanks for your quick reply! thanks doc!my periods were all always regular lasting 2-3days.got follicular study done doc says ovulation hpng
HealthTap member
Believe it out not cultured says it's lots of fibroids! What do i do?! Have already had deadly fibroids in 2010. Surgery, pain, weight loss.
HealthTap member
Thank u I have had a miscarriage inside my uterus resulting from my ovary not passing the egg...I no longer have pain it inly lasted a day

Education & Training

Medical/Graduate school

Dartmouth Medical School, NH
Graduated 1994MD

Awards

Top General Practitioner, First Place, Massachusetts - Winter
2013
Top Gynecologist, Second Place, Massachusetts - Summer
2013
HealthTap Founding Doctor

Affiliations

Harvard Medical School
Boston University School of Medicine
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