Pulmonary nodules: An unusual onset of HIV infection belatedly diagnosed.

Background: Cryptococcosis is a generally systemic and potentially lethal fungal infection. Although HIV infection is a predisposing condition, especially if the CD lymphocyte count is less than 100cells/mm, other forms of immunosuppression may be associated with this opportunistic fungal condition, such as prolonged steroid therapy or solid organ transplantation. Pulmonary presentation must be included in the differential diagnosis of pneumonia or pulmonary neoplasia in the immunosuppressed patient.

Cartilage in the walls of odontogenic keratocyst.

There are seven published cases in world literature on cartilage in the walls of odontogenic keratocysts. Herein is presented one further case with keratin inclusions in the cystic wall, which also bears a cartilaginous component. X-rays, clinical images and pathohistological images are included.

Non-Hodgkin lymphomas of oral cavity.

Non-Hodgkin lymphomas (NHL) often show up in an extranodal pattern, especially in the head and neck. Intraoral locations are much less frequent, particularly when they are single. This, in turn, can lead to a prolonged diagnosis and even to inadequate treatment.