An abdominal tumor or mass is an abnormal growth in the abdomen.
An abdominal mass causes visible swelling and may change the shape of the
abdomen. A person with an abdominal mass may notice weight gain and symptoms
such as abdominal discomfort, pain, and bloating.
Masses in the abdomen are often described by their location. The
abdomen is divided into four sections called quadrants. An abdominal mass may
occur in the right
upper quadrant, left upper quadrant, right lower quadrant, or left lower quadrant.
The stomach is also divided into two sections: the epigastric
section and the periumbilical section. The periumbilical section is
located below and around the belly button; the epigastric section is
located above the belly button and below the ribs.
Abdominal masses are often treatable. However, health complications may arise
depending on the cause of the mass.
Causes – Abdominal masses can be the result of a number of factors,
including an injury, cyst, benign tumor, cancer, or other disease.
Cysts
A cyst is an abnormal mass in the body that’s filled with fluid
or infected matter. It is sometimes to blame for an abdominal mass.
Cysts that commonly cause abdominal masses include ovarian cysts, which are cysts that form in or around the
ovaries.
Cancer
Cancers that often cause abdominal masses include:
- colon cancer
- kidney cancer
- liver cancer
- stomach cancer
Diseases
Certain diseases may also cause abdominal masses. These diseases
include:
- Crohn’s disease — an inflammatory bowel
disease (IBD) that causes inflammation of your digestive track lining
- abdominal aortic aneurysm — an enlargement or
protrusion of the large blood vessel that supplies blood to the abdomen,
pelvis, and legs
- pancreatic abscess — a pus-filled hollow in the
pancreas
- diverticulitis, inflammation or infection of the
diverticula, common pouches that form in weak places in the intestines and
colon
- hydronephrosis — an enlarged kidney due to the
backup of urine
- enlarged liver
- splenic enlargement
Symptoms –
Signs of an abdominal mass include:
- swelling in the area affected
- pain in the abdomen
- abdominal fullness
- nausea
- vomiting
- unintentional weight gain
- inability to urinate
- inability to pass stool
- fever
Abdominal masses may be hard, soft, stable, or moveable.
Diagnosis –
After
going over your medical history, including your symptoms and when they began,
your healthcare provider will have a good idea of where the mass is located.
This will lead them to determine which organs or surrounding structures are
affected by the abdominal mass.
During
a physical examination, your doctor will ask that you lie back while they
gently press on various areas of your abdomen. This examination helps them
locate the mass or any enlarged organs, and see if and where you are
experiencing tenderness.
An
imaging test is usually ordered to determine the size and location of the mass.
An imaging test can also determine what type of mass is in the abdomen. Imaging
tests that are commonly ordered for this purpose are:
- abdominal CT scan
- abdominal X-ray
- abdominal ultrasound
When
imaging tests are not enough, your doctor may wish to take a closer look at the
area involved. This is especially true if the digestive system is involved.
To
look in the digestive system, your doctor will perform a colonoscopy. They’ll
use a small microscope housed in a tube-like structure that is inserted into
your colon.
A blood
test (complete blood count) may also be ordered to check your hormone
levels and for the presence of infection. Women who have ovarian cysts will
require a special imaging scan called a transvaginal ultrasound.
Unlike
an abdominal ultrasound, which views organs on the inside by sliding a probe
over the abdomen, a transvaginal ultrasound is performed by inserting a probe
into the vagina. This allows the doctor to have a closer look at the uterus and
ovaries.