[A giant bilateral concha bullosa causing nasal obstruction]. / Concha bullosa bilateral gigante causante de obstrucción nasal.

Pneumatization of the middle turbinate or concha bullosa is the most common anatomical variant of this structure. Although usually small and asymptomatic, a large concha bullosa may obstruct sinus drainage. We present an uncommon case of massive bilateral concha bullosa that produced complete obstruction of the left nasal cavity and partial obstruction of the right nasal cavity.

[Basal cell parotid adenoma. Report of an unusual case and review of literature]. / Adenoma parotídeo de células basales. Presentación de un caso inusual y revisión de la bibliografía.

Basal cell adenoma is a subtype of salivary monomorphic adenoma that usually appears in the parotid gland. Its pathological differentiation from adenoid cyst carcinomas is difficult. It is treated by surgical excision. In this study we describe the clinical and pathological features of a case in an atypical patient.

[Post-laryngectomy tracheomalacia. The use of self-expandable metal prostheses]. / Traqueomalacia postlaringectomía. Utilidad de las prótesis metálicas autoexpandibles.

Tracheomalacia is an uncommon disorder in laryngectomized patients, but it is an important therapeutic problem. Self-expandable metal prostheses can be used in its treatment. We report the successful implantation of two tracheal prostheses in a laryngectomized patient.