Acute appendicitis: proposal of a new comprehensive grading system based on clinical, imaging and laparoscopic findings

Table 2 Proposal of a new grading system of acute appendicitis based on clinical, imaging and laparoscopic findings (2015)

Non-Complicated Acute Appendicitis
Grade 0 - Normal Looking Appendix (Endoappendicitis/Periappendicitis).
Grade 1 - Inflamed Appendix (Hyperemia, edema ± fibrin without or little pericolic fluid).
Complicated Acute Appendicitis
Grade 2 – Necrosis	A - Segmental Necrosis. (without or little pericolic fluid).
	B - Base Necrosis. (without or little pericolic fluid).
Grade 3 - Inflammatory Tumor-	A Flegmom.
	B - Abscess less 5 cm without peritoneal free air.
	C - Abscess above 5 cm without peritoneal free air.
Grade 4 - Perforated - Diffuse Peritonitis with or without peritoneal free air.

Note: Proposal for a new acute appendicitis grading system based on clinical, imaging and laparoscopic findings. (±) = Presence or absence of fibrinous exudate Gomes et al. (2015).

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