Cervical lymph nodes biopsies from 31 HIV positive patients (with or without AIDS) were studied by histologic methods and immunohistochemistry (StreptABC staining of paraffin sections) to identify cellular and extracellular matrix components. The results were the following: (1) the biopsies were included in the stages of follicular hyperplasia without fragmentation FH-FF (4 cases); follicular hyperplasia with follicular fragmentation FH + FF (16 cases); follicular involution FI (6 cases) and diffuse pattern DP (5 cases); (2) the most important alteration was the germinal centers disruption due to follicle lysis, which began in the light zone; (3) there was coincidence between intrafollicular hemorrhages and segmental hyaline mycroangiopathy; (4) during the progression of the disease occurred; (a) an increase in the number of mast cells, CD68+ and Mac 387+ macrophages; (b) a diffuse augment of collagen III, elastic fibers, laminin, fibronectin and proteoglycans; (c) maintenance of Factor VIII-related antigens in the vascular endothelial cells, with decrease in the expression of Ulex-Europeus I lectin. Follicular hyperplasia (FH - FF or FH + FF) was the most common histologic pattern recognized in the lymph nodes of patients without AIDS and follicular involution and difuse pattern were seen in those who had AIDS. The results indicate that the lymph node biopsies may provide important information about the evolutive stage of the disease and its prognosis.

Acquired Immunodeficiency Syndrome↗

PubMedDate not supplied

[Primary skin lymphoblastic lymphosarcoma. Report of a case followed by invasion of the maxillary sinus and systematization].

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Adult↗

PubMedDate not supplied

[A psychosomatic approach to perennial allergic rhinitis].

The objective of this investigation is to study the involvement of the psychological process in the etiology of perennial allergic rhinitis. Thirty patients with perennial allergic rhinitis, submitted to a Program of Hyposensibilization to Home Dust at the ENT Department, were selected. All patients were studied through psychological interviews and Pfister Colored Pyramid Test. Our results were compared to those obtained by Robert Heiss in his studies of standardization parameters (non rhinitic sample). The study revealed that our patients present intrinsic psychological difficulties characteristic of failures in the affective--emotional development and points out to a neurotic line of personality structuration.

Adult↗

PubMedDate not supplied

Postsurgical management with maxillary obturators after maxillectomy.

A partial or complete maxillectomy may be required for the treatment of oral carcinoma, which may cause functional, esthetic, and hygienic deficiencies. The placement of a surgical obturator at the time of surgery can minimize these deficiencies and provide immediate facial rehabilitation, which can have important physical and psychological effects for the patient. Various types of obturators and the techniques used for the fabrication of different types of obturator prostheses are reviewed.

Dental Prosthesis Design↗