Carcinoid is the most common of the Neuroendocrine Tumors (NETs).  They are Categorized (Foregut, Midgut, Hindgut) based on where they are found.  NETs secrete hormones or peptides, usually resulting in a body response referred to as "syndrome".  Often simple blood and urine tests can detect NETs.
 
Listed below are some of the Neuroendocrine Tumors (NETs)

NET typesSecretesMistaken for

Carcinoid Foregut     5-hydroxytryptophan (5HTP),  HistamineAsthma, Cushing's Disease


Carcinoid Midgut      Serotonin, substance P, kinins  Peptides       Irritable Bowel Syndrome (IBS),
     asthma, hot flashes

Carcinoid Hindgut     None      Silent, usually found on colonoscopy

Gastrinonma     Excess gastrin      Peptic ulcer disease, diarrhea, IBS,
     Gastric esophageal reflux disease
     (GERD)

InsulinomaExcess insulin       Hypoglycemia, sweating, weakness, 
     nausea, intermittent confusion

Glucagonoma   Excess glucagon   Diabetes, cachexia (a form of wasting
     and malnutrition)

VIPoma    Excess vasoactive intestinal peptide      Watery diarrhea, electrolyte disturbance

Somatostatinoma     Excess somatostatin     Diabetes, diarrhea, cholelithiasis 
     (gallstones)


While these may be slow growing tumors, YOU need to be very PROACTIVE.  Most of these tumors may have spread to other areas (metastasized) before you have any symptoms at all.  

There are many, excellent Physicians who diagnose and treat these diseases, some of whom are listed on the various Carcinoid and NET websites. 


SCANS 
Colonoscopy
CT scans
Esophagoscopy
MRI’s
Octreoscans
PET scans
Ultrasounds

Urine Tests   (partial list) 
24 hour 5HIAA (5-hydroxy indole acetic acid)
Catecholamine 
Blood Tests  (partial list)
Calcitonin
Calcium
Carcinoembryonic antigen (CEA)
Catecholamines
Chromogranin A (CgA)
Chromogranin B (secretogranin I)
Gastrin
Histamine
Motilin
N Peptide K
Neurokinin A
Neurotensin
Pancreastatin
Parathyroid hormone (PTH)
Serotonin
Substance P
Thyroid Function Tests (TFT’s)