[Mucinous cystadenoma of ileocecal appendix]. / Cistoadenoma mucoso de apéndice ileocecal.

We present two patients with mucinous cystadenoma and mucinous cystadenocarcinoma of the appendix, respectively. These are very uncommon lesions in that localization. We point out the lack of specificity of the term "mucocele" and also the need of strict criteria to define this type of lesions in order to establish the adequate treatment. Usually the diagnosis is not possible before surgery. The treatment consists of simple appendectomy for the benign lesions and right hemicolectomy for mucinous carcinoma.

[Diverticulum of the appendix: apropos of 1 case]. / Divertículo del apéndice: a propósito de un caso.

A case is presented of cecal appendicular diverticulum in a 52 year-old male, initially diagnosed as acute appendicitis. We emphasize the rarity or this pathology, its clinical presentation simulating a picture of acute appendicitis and its cure by appendectomy, as well as the diagnosis by pathologic study in most cases.