Chronic appendicitis: the process from pre-diagnosis to pathology

Chronic Appendicitis: Possible Differential Diagnosis in Patients with Chronic Abdominal Pain

In the emergency department, patients frequently present with abdominal pain, with a variety of different causes ranging from intra-abdominal to extra-abdominal and retroperitoneal pathologies which can affect all age groups. Chronic appendicitis is a rare medical condition characterized by less severe and continuous abdominal pain and a clinical picture lasting longer than 1-2 days and extending over months, even years, and it is not always possible to consider it as a preliminary diagnosis. We represent a case report of chronic appendicitis where the patient's clinical picture led the diagnostics and treatment in different directions and delayed the diagnosis. Namely, our patient was radiologically diagnosed with a collection of denser content retroperitoneally in the right lower quadrant of the abdomen, which in the first place was not related to possible appendicitis, regarding complaints. The existence of chronic appendicitis is a diagnosis unfamiliar to many clinicians and has no official diagnostic criteria. After diagnosis, treatment usually begins with antibiotics, and the next most common step is surgery. The optimal treatment for this condition is unknown. With this case report, we wish to draw attention to chronic appendicitis as a possible differential diagnosis in patients with chronic abdominal pain.

A Rare Presentation of Chronic Appendicitis in the Right Upper Quadrant: A Case Report

Chronic appendicitis is a rare cause of chronic abdominal pain that can be difficult to diagnose. We present a patient with chronic right upper quadrant pain that was finally diagnosed as chronic appendicitis. This 71-year-old male had no systemic diseases and presented to our outpatient clinic with right upper quadrant pain for one month. The pain tended to worsen in the early morning but could be relieved by bowel movements, sitting up, or walking. The findings of a physical examination, laboratory data, and abdominal ultrasound were not significant. Upper endoscopy revealed a shallow gastric ulcer at the antrum. However, the abdominal pain was not relieved by esomeprazole. A computed tomography (CT) scan revealed a dilated appendix with some appendicoliths in the retrocecal region. Due to chronic appendicitis, the patient underwent laparoscopic appendectomy, and the histopathological examination of the removed appendix confirmed the diagnosis. The abdominal pain completely resolved after the surgery. Chronic appendicitis should be kept in mind in patients with chronic abdominal pain without a definite diagnosis. This case illustrates that in addition to right lower quadrant pain, chronic appendicitis can also present with right upper quadrant pain or vague abdominal pain. A CT scan is invaluable in the diagnosis of abdominal pain when medical treatment fails to yield improvement.