(1) The size and weight of the carotid bodies have been found statistically significantly increased in 42 subjects from high altitude (14,350 ft) compared to 42 from sea level. (2) This increase is due to hyperplasia of glomic type I cells, which arrange themselves forming larger clusters and lobules at high altitudes, and in some degree to vascular engorgement. (3) Intense vacuolation of the chief cells is a histological feature of the high altitude specimens. (4) It is apparent that at high altitudes the size and weight of the carotid bodies increase with age. (5) The stimulus of chronic hypoxia is the most likely cause to explain the differences found.
QUISTE CUTÁNEO CILIADO EN PIEL ESCROTAL. DESCRIPCIÓN DE UN CASO CON DISCUSIÓNPATOGÉNICA DE LA ENTIDAD El quiste cutáneo ciliado (QCC) es una lesión benigna muy infrecuente, que aparece predominantemente en extremidades inferiores de mujeres jóvenes. En varones es una lesión aún más rara. En esta nota se presenta un caso de quiste cutáneo ciliado en piel escrotal de un varón de 15 años, se describen características histológicas e inmunohistoquímicas, se revisa la bibliografía al respecto y se realiza una discusión patogénica de la entidad. Se plantea que el QCC puede ser en realidad un patrón morfológico que engloba varias entidades patogénicamente diferentes. Los datos aportados en nuestro caso apoyan la teoría de que al menos un grupo de QCC, y en especial los acaecidos en pacientes de sexo masculino, podrían tener su origen en la metaplasia ciliada de glándulas sudoríparas apocrinas. Palabras clave: Quiste cutáneo ciliado. Piel escrotal. Inmunohistoquímica-receptores hormonales. Patogénesis.
Retrovesical masses in men not related to prostatic carcinoma or hyperplasia is an uncommon pathology. Rare masses or unusual manifestations of those common diseases are a diagnostic dilemma. We review our experience in three unusual retrovesical masses in men: carcinosarcoma filling a giant bladder diverticulum; cystic prostatic carcinoma; and acquired cystic dilatation of the seminal vesicle associated with a prostatic carcinoma that obstructed and invaded the vesicle. We report the imaging findings and review the literature. In our experience, the imaging findings are usually not specific for doing a precise diagnosis and biopsy procedures are necessary.
We present an uncommon case of a large solitary perirenal metastasis from a malignant peripheral nerve sheath tumour (MPNST) mimicking a primary renal tumour. A metastatic MPNST to the perirenal space is unusual and, in this rare location, is difficult to differentially diagnose from a primary renal tumour.
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