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Mayo Clinic
Scottsdale, AZ
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About
SpecialtiesDoctors 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.
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.
Hematology
Medical Oncology
Languages spoken
English
Doctor Q&A
20 Answers
0 Agrees
The number of answers this doctor has agreed with.
A 21-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Exjade: In general the oral iron chelator Exjade is the best tolerated and most effective iron chelator. Whether one needs this therapy is a discussion to be ... Read More
4.9k viewsAnswered >2 years ago
A 21-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Adult decreased fact: A decrease in clotting factors as an adult can be an "acquired" hemophilia. These can arise when the body creates an immune response against clotting ... Read More
4.9k viewsReviewed >2 years ago
A 30-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Not likely: Given most patients with hereditary spherocytosis (hs) have the disease lifelong would not likely cause a change in fatigue levels.
4.9k viewsAnswered >2 years ago
A 38-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Could be either: Chances are greatest that an enlarged lymph node is not cancer (i.e. Lymphoma) - however needs to be assessed by a physician and sometimes a biopsy ne... Read More
4.9k viewsAnswered >2 years ago
A 41-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Dpnds on Gender/lab: The normal range depends on the lab and gender. In our laboratory the lower limit of normal for a female would be 12.0 g/dl. The rbc is number of red ... Read More
4.9k viewsAnswered >2 years ago
A 36-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Usually GI issues: Oral iron most commonly causes GI side effects - constipation etc. Dizziness would be possible, but less likely.
4.9k viewsReviewed >2 years ago
A 31-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Yes: Folic acid should not be a problem if you have erythrocytosis or polycythemia. Whether extra Folic Acid is needed would depend on the recommendation f... Read More
4.9k viewsAnswered >2 years ago
A 43-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Other way around: In general the white cells can destroy red blood cells through the immune system. The red cells do not have the capability of destroying the white cel... Read More
4.9k viewsReviewed >2 years ago
A 20-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Hemophilia panels: There are very specific panels to measure the overall clotting of the blood, and the exact measurement of the clotting factors involved with coagulati... Read More
4.9k viewsReviewed >2 years ago
A 51-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
No formal limit: In general a donor less than 70 years of age is preferred, but this is not a hard limit. Depends on the availability of alternative donor options, the... Read More
4.9k viewsAnswered >2 years ago
A 46-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Probably Not: That value is in the normal range. Still that value might be associated with B12 deficiency and studying the size of the red cells and other vitamin l... Read More
4.9k viewsAnswered >2 years ago
A 49-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Very common, many ex: Bruising is common in women as they age due to thinning of the skin, decreased estrogen. Whether this is abnormal increased bruising depends on blood ... Read More
4.9k viewsAnswered >2 years ago
A 44-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Brken RBC- Hemolysis: Hemolysis is a breakdown of red blood cells early than normal (usually happens to all red cells after 100 days). Causes can be from immune system, mec... Read More
4.9k viewsReviewed >2 years ago
A 40-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Probably Not: The blood clotting system does not require oxygen to cause clotting, so in theory should not be a major difference between the water and air.
4.9k viewsAnswered >2 years ago
A 21-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Stress: Sickled red blood cells can arise in individuals with hemoglobin s (those with sickle cell disease typically (of african or middle eastern descent usu... Read More
4.9k viewsAnswered >2 years ago
A 23-year-old male asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Usually < 2 weeks: If from a bacterial infection (i.e. Strep throat for neck lymph nodes), groin lymph nodes from leg skin infection, then < 2 weeks. If enlarged for ... Read More
4.9k viewsAnswered >2 years ago
A 37-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Unlikely: No evidence that masturbation has an impact on blood counts.
4.9k viewsReviewed >2 years ago
A 38-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Yes but mildly: Menstrual blood loss does lower the hemoglobin, but probably by values of less than 1-2 g/dl.
4.9k viewsAnswered >2 years ago
A 31-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Values >11 x 10(9)/L: The normal white cell range is up to 10.5 x 10(9)/l for most individuals. Mildly increased valuies (i.e. Up to 25 x 10(9)/l) can be from infection, in... Read More
4.9k viewsAnswered >2 years ago
A 36-year-old member asked:
Dr. Ruben Mesaanswered
Hematology 31 years experience
Likely a blood vesse: If only from one side a recurrent nosebleed may be from a specific blood vessel bleeding, as opposed to a blood clotting issue. Should have an exam an... Read More
4.9k viewsAnswered >2 years ago
90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.
TestimonialsRecommendations and Thank you notes are endorsements given from patients or other doctors.
Recommendations and Thank you notes are endorsements given from patients or other doctors.
2
Recommendations
12
Thank you notes
HealthTap member
Mar 31, 2015
Dr. Mesa is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Mar 31, 2015
Dr. Mesa is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Thanks for your quick reply! First medication had no effect so they changed it going on 3 weeks
HealthTap member
Thank you, your answer was very helpful!
Education & Training
Medical/Graduate school
Mayo Clinic College of Medicine
Graduated 1995MD
Medical/Graduate school
Mayo Clinic College of Medicine
Graduated 1993MD
Medical/Graduate school
University of Illinois, Urbana-Champaign
Graduated 1991MD
Residency
Mayo Clinic Minnesota
Residency
Mayo Clinic Minnesota
Affiliations
American College of Physicians
American Board of Internal Medicine
American Medical Association
90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.
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