CT scan pitfalls and angiography’s role in juvenile nasopharyngeal angiofibroma: A case report

Diagnosis to treatment of Juvenile Nasopharyngeal Angiofibroma (JNA) required a multidisciplinary approach. CT scan works by combining multi-slice imaging from a device that rotates around the object. The potential of missing certain parts in the scanning process can occur. Angiography was the option to cover the CT scan pitfalls. In this case, we discussed CT scan pitfalls that can be overcome by angiography through JNA case report by showing clearer picture of the JNA and its feeding artery. 14 years old child complained of nasal congestion. On physical examination, the lesion expanded the anterior side of nasal cavity. The patient underwent a synonasal CT scan without contrast. It was obtained a heterogeneous solid mass in the nasopharynx extending to the concha and right and left maxillary sinuses. However, until the preparation of angiography, the actual size of the tumor, as well as the entire vasculature, is not yet known. The angiographic features suggested that the right side (seen in the right maxillary artery) was more dominant than the left side. However, both the right and the left finding reassured that the tumor location was more dominant in the anterior nasal cavity. The posterior lesion was also seen but did not predominate in comparison to the anterior. These findings helped clinicians in planning operative action in order to evacuate the tumor.

Gamma Knife Stereotactic Radiosurgery for Brain Metastases Using Only 3 Pins

BACKGROUND: Removal of a pin during Gamma Knife stereotactic radiosurgery (GK-SRS) may be necessary to prevent collision and allow treatment. OBJECTIVE: To investigate outcomes after GK-SRS for treatment of brain metastases using a head frame immobilized to the skull with only 3 pins. METHODS: Between 2009 and 2014, we retrospectively reviewed the records of 1971 patients and identified 20 patients with multiple brain metastases treated with GK-SRS in which 1 anterior pin was removed immediately before treatment of a single posterior lesion. GK-SRS was also delivered to 116 other lesions in these 20 patients using the standard 4 pins during the same session, serving as an internal control for comparison. Endpoints included local control, dosimetric parameters, toxicity, and overall survival. RESULTS: The median number of lesions treated per session was 6 (range, 2-14). The lesions treated using 3 pins were located in the occipital lobe (n = 14) or the cerebellum (n = 6). Median follow-up was 12.3 months. There was 1 local failure involving a control lesion. Lesions treated using 3 pins had a lower prescription isodose line. GK-SRS of a lesion using 3 pins did not cause any clinical toxicities or increase in radiographic edema or hemorrhage. CONCLUSION: Treating posteriorly located brain metastases with GK-SRS using only 3 pins provided excellent local control and no difference in treatment toxicity, which may make it a safe and reasonable option for lesions that may otherwise be difficult to treat.

Osteoartritis sub-astragalina posterior

La circunstancia de harber encontrado un caso de osteo-artritis subastragalina posterior, -lesión cuya rareza explica las pocas referencias anotadas en la literatura- y el hecho de las derivaciones clínicas y terapéuticas que comporta su diagnóstico, nos ha llevado a hacer una revisión de su conocimiento en el momento actual, dar cuenta de la feliz evolución del caso por nosotros anotado y, en fin, discutir ciertos aspectos fisiológicos y su relación con otros procesos afines. En especial, queremos señalar la posibilidad de que, con los recursos actuales, es posible controlar la evolución de estas infecciones en sólo la porción posterior de la articulación ya dicho, evitando así su difusión a la vertiente anterior y las articulaciones mediotarsianas.