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Melanosis Coli Center - Waterloo, IA

Waterloo Gastroenterologist Doctors for Melanosis Coli

Type of Physician: Gastroenterologist

What is a Gastroenterologist?

A subspecialty certification by the Board of Internal Medicine; practitioners focus on the stomach, intestines, colon, liver, and gallbladder (digestive organs). The gastroenterologist treats conditions such as abdominal pain, ulcers, diarrhea, cancer, and jaundice and they consult with surgeons when abdominal operations are indicated.

Specialty: Gastroenterology

Common Name: GI Doctor

Gastroenterologist Doctors in Waterloo *

Covenant Clinic Waterloo
Victor Lawrinenko
2710 Saint Francis Dr
STE 510
Waterloo, IA 50702
(319) 272-5000

Suresh K Reddy & Ravi Mallavarapu MDs
Ravi Mallavarapu
125 East Tower Park Drive
United Medical Park
Waterloo, IA 50701
(319) 833-5990

Suresh K Reddy & Ravi Mallavarapu MDs
Suresh K Reddy
125 East Tower Park Drive
United Medical Park
Waterloo, IA 50701
(319) 833-5990

Covenant Health Clinic Cedar Falls
Victor R Mujica
516 Division St
STE STE 110
Cedar Falls, IA 50613
(319) 268-3550

Internists PC
Nile Dusdieker
115 8th St NE
Cedar Rapids, IA 52401
(319) 363-3565

Gastroenterologists PC
Dean Abramson
931 8th Ave SE
Cedar Rapids, IA 52401
(319) 366-8695

Gastroenterologists PC
Sudhakar Misra
931 8th Ave SE
Cedar Rapids, IA 52401
(319) 366-8695

Gastroenterologists PC
Douglas J Purdy
931 8th Ave SE
Cedar Rapids, IA 52401
(319) 366-8695

Gastroenterologists PC
Leon Qiao
931 8th Ave SE
Cedar Rapids, IA 52401
(319) 366-8695

Gastroenterologists PC
Robert A Silber
931 8th Ave SE
Cedar Rapids, IA 52401
(319) 366-8695

Gastroenterologists PC
Gary Weinman
931 8th Ave SE
Cedar Rapids, IA 52401
(319) 366-8695

Mason City Clinic GI
Satish K Sondhi
250 S Crescent Dr
Mason City, IA 50401
(641) 494-5350

Mason City Clinic GI
Joseph D Thoreson
250 S Crescent Dr
Mason City, IA 50401
(641) 494-5350

Center for Digestive Diseases
Robert W Summers
200 Hawkins Dr
Iowa City, IA 52242
(319) 356-4901

Center for Digestive Diseases
Cyrus P Tamboli
200 Hawkins Dr
Iowa City, IA 52242
(319) 356-4901

Gastroenterology Associates of Iowa City PC
Roger Joe Ewing
540 E Jefferson St
STE 102
Iowa City, IA 52245
(319) 337-5997

Gastroenterology Associates of Iowa City PC
Brian O'Meara
540 E Jefferson St
STE 102
Iowa City, IA 52245
(319) 337-5997

Gastroenterology Associates of Iowa City PC
Thomas Shreves
540 E Jefferson St
STE 102
Iowa City, IA 52245
(319) 337-5997

Gastroenterology Associates of Iowa City PC
Joseph Truszkowski
540 E Jefferson St
STE 102
Iowa City, IA 52245
(319) 337-5997

McFarland Clinic Gastroenterology
Jon L Fleming
1215 Duff Ave
Gastroenterology
Ames, IA 50010
(515) 239-4450

McFarland Clinic Gastroenterology
Robert Graveline
1215 Duff Ave
Gastroenterology
Ames, IA 50010
(515) 239-4450

McFarland Clinic Gastroenterology
Bryan Graveline
1215 Duff Ave
Gastroenterology
Ames, IA 50010
(515) 239-4450

McFarland Clinic Gastroenterology
Ali J Husain
1215 Duff Ave
Gastroenterology
Ames, IA 50010
(515) 239-4450

McFarland Clinic Gastroenterology
Thomas D Johnson
1215 Duff Ave
Gastroenterology
Ames, IA 50010
(515) 239-4450

Waterloo, Iowa

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Melanosis Coli

What is melanosis coli?

Melanosis coli is a condition usually associated with chronic laxative use in which dark pigment is deposited in the lamina propria (one of the lining layers) of the large intestine (colon). The pigment deposition results in a characteristic dark brown to black discoloration of the lining of the large intestine. This condition is sometimes called pseudomelanosis coli because the pigment deposits consist of a pigment known as lipofuscin and do not contain melanin as implied by the term "melanosis." Lipofuscin is a cellular pigment that forms when cells are destroyed, often called "wear and tear" pigment that can be found throughout the body.

The dark color of the intestinal lining may be uniform or patterned, and the discoloration may be slight or very pronounced. The intensity and pattern of the discoloration may even vary among different sites in the colon of a patient. The condition may also be reversed upon discontinuation of laxative use. In some cases, the wall of the colon appears normal to the eye, but microscopic evaluation of biopsies by a pathologist reveals areas of pigment in the colon's lining. The pigment in melanosis coli does not accumulate in polyps or tumors of the large intestine.

What are the symptoms of melanosis coli?

Melanosis coli does not cause symptoms.

What causes melanosis coli?

Melanosis coli usually results from chronic use of laxatives of the anthranoid group. Some examples of anthranoid laxatives are senna and rhubarb derivatives. Many of these laxatives have been in use for hundreds of years. In 1997, the U.S. Food and Drug Administration (FDA) banned the use of the popular anthranoid laxative phenolphthalein due to fears that it might be carcinogenic (cancer-causing). Animal studies had shown that extremely high doses of phenolphthalein led to tumors in animals, but it has nev...

Recommended Reading Related to Melanosis Coli

Flexible Sigmoidoscopy »

What is flexible sigmoidoscopy?

Flexible sigmoidoscopy is a procedure that allows your doctor to examine the rectum and the lower (sigmoid) colon. The flexible sigmoidoscope is a flexible tube 60 cm long and about the thickness of your little finger. It is inserted gently into the anus and advanced slowly into the rectum and the lower colon. It is an accurate and simple method of investigating the cause of rectal bleeding, change in bowel habit, and rectal symptoms such as pain and diarrhea. Flexible sigmoidoscopy also is a part of colon screening and surveillance for colon cancer.

What is the preparation for flexible sigmoidoscopy?

In order to obtain accurate results, the rectum and the lower colon must be completely clean of stool. Your doctor will give you detailed instructions on how to cleanse your colon. In general, this requires the use of one or two enemas prior to the procedure and may also call for a laxative and some dietar...

Emergency Contact for Waterloo

  • In case of Emergency, call 911

Nearby Waterloo Hospitals *

Covenant Medical Center
3421 W Ninth St
Waterloo, IA 50702
(319)272-8000

Allen Memorial Hospital
1825 Logan Ave
Waterloo, IA 50703
(319)235-3941

Sartori Memorial Hospital
515 College St
Cedar Falls, IA 50613
(319)268-3000

Waverly Health Center
312 Ninth St SW
Waverly, IA 50677
(319)352-4120

Mental Health Institute
2277 Iowa Ave
Independence, IA 50644
(319)334-2583

Grundy County Memorial Hospital
201 East J Ave
Grundy Center, IA 50638
(319)824-5421

Buchanan County Health Center
1600 1st St E
Independence, IA 50644
(319)334-6071

Mercy Hospital Oelwein
201 8th Ave SE
Oelwein, IA 50662
(319)283-6000

Community Memorial Hospital
909 W First St
Sumner, IA 50674
(563)578-3275

Virginia Gay Hospital
502 N Ninth Ave
Vinton, IA 52349
(319)472-6200

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