onco - esophagus, stomach, colon, rectum Flashcards
Esophageal Ca is most common in what sex? Age?
M
>50
Lining of esophagus
Stratified squamous
Most common benign tumor of esophagus?
Leiomyoma
Presenting symptoms of esophageal Ca
Dysphagia - most common
Weight loss
Regurgitation
Diagnosis for esophageal Ca
Barium swallow
Esophagoscopy
Seen in barium swallow in esophageal Ca
Filling defect
Confirmatory procedure for esophageal Ca after barium swallow
Esophagoscopy
Why is biopsy contraindicated in diagnosis of esophageal Ca?
Destroys mucosa, can affect the result. Violates the mucosa making subsequent surgery (otherwise lesion will be disturbed)
Treatment for esophageal Ca
Esophagectomy
Percutaneous endoscopic gastrostomy (PEG)
Treatment of choice for esophageal Ca if upper 3rd is affected
Surgery, esophagectomy
Treatment of choice for esophageal Ca if lower 3rd is affected
RT
Why is endoscopy contraindicated during surgery?
Could perforate esophagus
Etiology of esophageal Ca
Alcohol ingestion
Cigarette smoking, opiates
Food additives (Nitrate,Fungal toxins in pickled veggie)
Poor dental hygiene
Hot drinks, lye ingestion
Esophageal disorders (Esophagitis, achalasia, Mallory-Weiss, gerd, Plummer-Vinson)
Esophagitis is an infection caused by..
Herpes simplex
CMV
Candidiasis, aspergillosis
Motor disorder characterized by aperistalsis, failure of relaxation of LES and increased basal tone of LES
Achalasia
Gross appearance of achalasia
Proximal dilatation (Bird’s beak)
Complication of long standing reflux esophagitis or gerd where in squamous cell becomes columnar
Barrett’s esophagus
Barrett’s esophagus has increased risk for what type of esophageal Ca?
Adenocarcinoma
Most common esophageal Ca
SCC
Rare esophageal Ca
Mucoepidermoid Ca
Adenoid cystic
Most commonly affected site of Ca of SCC of esophagus
Middle 1/3
Most commonly affected site of adenocarcinoma of esophagus
Distal. 1/3
Metastatic site of esophageal
Liver
Bone
Brain
Earliest metastasis of esophageal Ca
Liver, due to chronic drinking