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Cataracts

Glucose Meter Reading Showing Hypoglycemia. Courtesy Abbott.
Glucose Meter Reading.Courtesy Abbott.

What Is Diabetic Instability?

[dropcap]D iabetic instability, also called brittle diabetes, is poor control of blood sugar characterized by frequent rise (hyperglycemia) and fall (hypoglycemia). These fluctuations can be life-threatening and cause unnecessary complications.

Q: What are complications in diabetes?

A: Complications of diabetes include any/all of the following:

  • Peripheral neuropathy that causes burning, numbness, or tingling in the extremities.
  • Skin infections and ulcers that do not heal and can lead to amputation of toes, feet or legs.
  • Damage to retina that can progress to blindness.
  • Cataracts and glaucoma that impair vision and can cause blindness.
  • Increased susceptibility to serious infections of the genitourinary tract, lung and upper respiratory tract that can become systemic and life-threatening.
  • Kidney disease that can lead to kidney failure.
  • Heart disease that can lead to heart failure.
  • Vascular disease that can lead to stroke.
  • Impaired motility in digestive tract that can lead to dyspepsia and constipation.
  • Pregnancy complications.
  • Shortened life expectancy.

The main causes of brittleness include malabsorption, certain drugs (alcohol, antipsychotics), defective insulin absorption or degradation, defect of hyperglycemic hormones especially glucocorticoid and glucagon, and above all delayed gastric emptying as a result of autonomic neuropathy.1

What Is Diabetic Instability In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Vantyghem MC, Press M. Management strategies for brittle diabetes. Ann Endocrinol (Paris). 2006 Sep;67(4):287-96. [↩]

Intraepithelial Lymphocytosis In Normal Small Bowel Samples 

esophageal small cell carcinomaWhat Is Esophageal Small Cell Cancer (Carcinoma)?

[dropcap]E sophageal small cell carcinoma is a rare and aggressive malignancy arising in the esophagus with a poor prognosis.

Q: Where does the cancer occur in the esophagus?

A: Esophageal cancer can occur anywhere in the esophagus.

The esophagus is a muscular tube that transports swallowed substances to the stomach. It begins at the cricoid cartilage (Adam’s apple) as a continuation of the pharynx and ends at the lower esophageal sphincter (LES).

The LES is a circular muscle surrounding the junction of the esophagus and stomach. The LES opens to allow swallowed food and liquids to enter the stomach and closes to prevent their travelling back into the esophagus.

Dysphagia (difficulty swallowing) occurs when the inside diameter of the esophagus constricts to less than 14 millimeters. First there is difficulty swallowing solid food then liquids and saliva due to progressive growth of the cancer.

What Is Esophageal Small Cell Carcinoma In Celiac Disease and/or Gluten Sensitivity?

Cancer Predisposition In Children 

Mesenteric Lymph Node Cavitation. Courtesy
Mesenteric Lymph Node Cavitation.  Courtesy McBride OM, Skipworth RJ, Leitch D, Yalamarthi S.

What Is Mesenteric Lymph Node Cavitation And Hyposplenism?

[dropcap]M esenteric lymph node cavitation and hyposplenism combination is a rare lymphatic entity. It is characterized by involution (degeneration) of a mesenteric lymph node (abdominal) and absence of functional spleen tissue.

Q: What is happening to the lymph nodes?

A: Lymph nodes are enlarged with central, partly cystic degeneration. When cut open either at surgery or autopsy, milky fluid exudes from the cut surface.

In regards to absent spleen function, the body is highly susceptible to bacterial invasion such as pneumonia because tissues of the spleen, called the pulp, produce specialized white blood cells that protect the body against bacterial invasion and trap foreign antigens.

What Is Mesenteric Lymph Node Cavitation And Hyposplenism In Celiac Disease and/or Gluten Sensitivity?

Miscarriage (Spontaneous Abortion)

Pitting edema. Right photo shows that indent remains from pressing. Courtesy wikimedia.
Pitting edema. Right photo shows that indent remains from pressing. Courtesy wikimedia.

What Is Edema?

[dropcap]E dema is an abnormal swollen condition of the skin characterized by excess extracellular fluid volume, meaning there is an increase of the fluid that normally surrounds cells. Edema may be hardly noticeable or it can become extensive.

Edema can have various appearances and can develop from various causes.

Q: What are the appearances and causes of edema?

A: Here are the appearances of edema:

  • Pitting edema. It is called pitting edema if when the skin is pressed with a finger, the indent remains. This edema results from fluid leaking out of the bloodstream into the surrounding tissues. Pitting edema can be a feature of many disorders including heart disease, kidney disease, vascular disease, cancer, and malnutrition.
  • Myxedema is a firm swelling or thickening of subcutaneous skin that does not pit, as seen in thyroid disease.

Here are causes of edema:

  • Local edema as a response to trauma or infection.
  • Lower extremity edema from poor circulation and malnutrition.
  • Edema in the lungs from right sided heart disease.
  • Abdominal edema from liver disease, intestinal disease.
  • Body wide edema from heart disease, kidney disease, thyroid disease.

What Is Edema In Celiac Disease and/or Gluten Sensitivity?

Infertility in Females

Lost patch of hair at base of scalp due to alopecia areata. Courtesy Wikimedia,
Lost patch of hair at base of scalp due to alopecia areata. Courtesy Wikimedia,

What Is Alopecia Areata?

[dropcap]A lopecia areata is an autoimmune attack on hair follicles characterized by sudden hair loss involving scalp or beard, although any hairy area may be affected.

Areas of hair loss have a patchy pattern with sharply defined edges.

Q: Can all hair be affected?

A: All body hair may be lost, which is called alopecia universalis although this is uncommon.

In alopecia areata, white blood cells of the immune system attack the rapidly growing cells in the hair follicles. The affected hair follicles become small and drastically slow down hair production. Fortunately, the stem cells that continuously supply the follicle with new cells do not seem to be targeted. So the follicle always has the potential to regrow hair but regrowth is unpredictable.1

What Is Alopecia Areata In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. http://www.niams.nih.gov/Health_Info/Alopecia_Areata [↩]

Mesenteric Lymph Node Cavitation And Hyposplenism

GERD Gluten Celiac Disease
Arrows Show Abnormal Movement of Gastric Acid in Gastroesophageal Reflux Disease.

What Is Gastroesophageal Reflux Disease (GERD)?

[dropcap]G ERD is an upper digestive disorder that is characterized by a decrease in lower esophageal sphincter pressure (LES,) which allows the abnormal reflux or backflow of stomach contents into the esophagus. It is also called erosive esophagitis or reflux esophagitis and is the most common disorder of the esophagus.

The esophagus is a muscular tube that transports swallowed substances to the stomach. It begins at the cricoid cartilage (Adam’s apple) as a continuation of the pharynx and ends at the lower esophageal sphincter (LES).

The lower esophageal sphincter is located at the junction of the esophagus and the stomach. It functions like a circular band to tighten after food is ingested in order to prevent its going back up the esophagus.

Q: How does reflux damage the esophagus?

A: Damage to the lining of the esophagus is induced by the caustic, chemical action of acid and pepsin in gastric juice and, in severe cases, also bile salts, that back upwards from the stomach through an impaired LES. Gastric acid combined with pepsin or bile salts seems to be more harmful to the esophageal epithelial layers than gastric acid alone.1

Pepsin is normally produced by the stomach to dissolve protein in swallowed food. Unfortunately, when the esophagus is inflamed, pepsin will act on it to break down the protein in its sore wall. These sores are called erosions.

Importantly, refluxate to the esophagus in patients with acid suppression therapy is different from those in patients without. Higher levels of secondary bile acids are detected in patients with acid suppression therapy. Even if acid suppression is successful, weakly acidic reflux with bile acids can damage the esophagus.1

Damage starts at the luminal surface (inside where food passes through) of the squamous epithelium (tough surface cells) and progresses through the underlying layers into the submucosa.

One of the primary functions of the esophageal epithelium is to protect the underlying tissue from mechanical and chemical damage by acting as a barrier. The epithelial layers of the distal esophagus need to withstand reflux from the stomach and its contents. When the epithelium fails to protect the underlying tissue from this damage, it leads to erosions, esophagitis, and may lead to Barrett’s esophagus.1

Barrett’s esophagus and esophageal small cell cancer are severe complications of GERD that can be fatal.

GERD can result from too much, or more commonly, too little stomach acid.

What Is Gastroesophageal Reflux Disease (GERD) In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Chen X, Oshima T, Tomita T, Fukui H, Watari J, Matsumoto T, Miwa H. Acidic bile salts modulate the squamous epithelial barrier function by modulating tight junction proteins. Am J Physiol Gastrointest Liver Physiol. 2011 Aug;301(2):G203-9. doi: 10.1152/ajpgi.00096.2011. Epub 2011 May 26. [↩] [↩] [↩]

Lymphoma, Enteropathy-Associated T-Cell (EATL) 

A real photomicrograph of carcinoma of the esophagus. Panorama of 6 photos of a slide at 40x through the microscope. Some areas may appear blurry due to shallow DOF.
A real photomicrograph of carcinoma of the esophagus. Panorama of 6 photos of a slide at 40x through the microscope. Some areas may appear blurry due to shallow DOF.

What Is Cancer Of The Esophagus?

[dropcap]C ancer of the esophagus is a malignancy arising in the stratified squamous cell lining of any part of the esophagus and having a poor prognosis.

This tumor first invades the deeper layers of the esophagus which includes the layer beneath the mucosa (submucosa) and muscle before it may invade structures close to it including the aorta and trachea. Later, it may spread to organs further away such as the liver, lungs and bones.

Q: What is the stratified squamous cell lining of the esophagus?

A: Stratified squamous cells are flat epithelial cells that are composed of several layers, called the epithelium. This type of epithelium forms the surface mucosa that lines the inside of the esophagus.

The esophagus itself is a muscular tube that transports swallowed substances to the stomach. It begins at the cricoid cartilage (Adam’s apple) as a continuation of the pharynx in the throat and ends at the lower esophageal sphincter (LES).

The LES is a circular muscle surrounding the junction of the esophagus and stomach. The LES opens to allow swallowed food and liquids to enter the stomach and closes to prevent their travelling back into the esophagus.

Who is Affected in the General Population?

Esophageal cancer is the fifth leading cause of death in men from cancer worldwide.1

What Is Cancer Of The Esophagus In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Feldman M, Friedman LS, Brandt LJ. Sleisenger & Fordtran’s Gastrointestinal and Liver Disease. ed 9. Philadelphia: Saunders; 2010. pp. 745–767. [↩]

Bone Fractures 

Proptosis and lid retraction are features of Grave's disease, or hyperthyroidism. Courtesy of Wikimedia.
Proptosis and Lid Retraction are Features of Grave’s Disease, or Hyperthyroidism.

What Is Grave’s Disease (Hyperthyroidism)?

[dropcap]G rave’s disease, or hyperthyroidism, is an autoimmune thyroid disease characterized by diffuse nontender goiter, elevated thyroxine hormone levels (T4, T3), suppressed thyroid stimulating hormone (TSH), and presence of thyroid receptor antibodies in the blood.

The autoantibodies involved are anti-thyroid peroxidase and anti-thyroglobulin antibodies. They bind to the thyroid stimulating hormone receptors, causing thyroid stimulation. These antibodies are detected by blood tests.

Q: What happens to the thyroid gland in Grave’s disease?

A: The thyroid gland is located in the front of the neck. This butterfly shaped gland consists of a large number of closed vesicles that contain a homogenous substance called colloid, which contains the thyroglobulin. Thyroglobulin is an iodine-containing protein secreted by the thyroid gland and stored within its colloid, from which the thyroid hormones thyroxine (T4) and triiodothyroinine (T3) are derived.1

Thyroxine molecule, chemical structure. Thyroid gland hormone that plays a role in energy metabolism regulation. It is a iodine containing derivative of thyrosine. Atoms are represented as spheres with conventional color coding: hydrogen (white), carbon (grey), oxygen (red), nitrogen (blue), iodine (purple).
Thyroxine molecule. Atoms are represented as spheres with conventional color coding: hydrogen (white), carbon (grey), oxygen (red), nitrogen (blue), iodine (purple).

T3 is the active hormone and is made from T4. Thyroid hormones are released into the bloodstream as needed to control metabolism, brain development, breathing, heart and nervous system functions, body temperature, muscle strength, skin dryness, menstrual cycles, weight, and cholesterol levels.

Thyroid hormone production is regulated by thyroid-stimulating hormone (TSH), which is made by the pituitary gland in the brain. Normally, when thyroid hormone levels in the blood are low, the pituitary releases more TSH in response to stimulation by the nearby hypothalamus which is continually monitoring levels of thyroxin. When thyroid hormone levels are high, the pituitary decreases TSH production. So in Grave’s disease, release of TSH by the pituitary gland is suppressed by the hypothalamus because thyroid hormone is elevated. Goiter develops from growth stimulation by thyroid stimulating autoantibodies.

What Is Grave’s Disease In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Taber’s Cyclopedic Medical Dictionary. 19th ed. F.A. Davis Company. Philadelphia, PA. [↩]

Cancer Of The Pharynx 

Areas of the Pharynx Where Cancer May Occur. Courtesy Wikimedia.
Areas of the Pharynx Where Cancer May Occur. Courtesy Wikimedia.

What Is Cancer Of The Pharynx?

[dropcap]C[/dropcap]ancer of the pharynx is a malignant growth of stratified squamous cells that line the pharynx, or throat.

Q: What are stratified squamous cells that line the pharynx?

A: Stratified squamous cells are thin, flat epithelial cells consisting of several layers forming the surface mucosa that protects underlying layers of the pharynx. These cells lie very close together and have no blood vessels.

The pharynx is the upper passageway of the throat where swallowing food and fluids from the mouth first pass on the way to the esophagus and breathing air passes from the nose and mouth to and from the lungs.

The pharynx provides for speech production, adequate taste reception, and proper hearing through equalization of air pressure in the eustachian tubes.

The pharynx has three areas and pharyngeal cancer can occur in any of them: the nasopharynx behind the nose, the oropharynx behind the mouth, and the hypopharynx or laryngopharynx, just above the larynx. Tonsils, adenoids, and other lymph tissue lie at the back of the throat.

Unfortunately, cancers of the pharynx tend not to be detected until late in their course when symptoms become evident. This makes the prognosis poor. See symptom below.

What Is Cancer Of The Pharynx In Celiac Disease and/or Gluten Sensitivity?

Adenocarcinoma Of Small Intestine (Cancer)

Section of small bowel surgically removed for adenocarcinoma that grew through the wall. By: CDC/ Dr. Edwin P. Ewing, Jr.
Section of small bowel surgically removed for adenocarcinoma that grew through the wall. By: CDC/ Dr. Edwin P. Ewing, Jr.

What Is Adenocarcinoma Of Small Intestine?

[dropcap]A[/dropcap]denocarcinomas are malignant tumors, or cancer, of the small bowel arising out of glandular tissue. They fall in the category of rare neoplasm, comprising only 3% of all gastrointestinal malignancies.

Primary adenocarcinoma is the most common histological (cell) subtype constituting 35–50% of cases.1 

Q: What does adenocarcinoma look like?

A: Adenocarcinoma may manifest as strictures, nodules, excavating masses, or annular lesions.2

What Is Adenocarcinoma Of Small Intestine In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Benhammane H, El M’rabet FZ, Serhouchni KI, El yousfi M, Charif I, Toughray I, et al. Small Bowel Adenocarcinoma Complicating Coeliac Disease: A Report of Three Cases and the Literature Review. Case Rep Oncol Med. 2012; 2012: 935183. Published online 2012 December 1. doi: 10.1155/2012/935183 [↩]
  2. Ramachandran I, Sinha R, Rajesh A, Verma R. Multidetector row CT of small bowel tumors.  Clinical Radiology. 2007; 62:607-614. [↩]