A collection of Practice Guidelines published in AFP is available at http:// www.aafp.org/afp/ practguide. Infantile hemangiomas, the most common tumors of childhood, are vascular neoplasms characterized by abnormal proliferation of endothelial cells and aberrant blood vessel architecture. The incidence of infantile hemangiomas is approximately 5%. Congenital hemangiomas are biologically and be...

Sertoli leydig cell tumors are exceedingly uncommon tumors of the ovary accounting for less than 0.5% of all ovarian neoplasms and 1% of sex cord tumors. These tumors are functional and secrete testosterone and only rarely they are estrogenic. Hence the patients present with virilization features. Most of the tumors are unilateral and bilaterality is extremely rare. Here we report an unusual ca...

Nasopharyngeal angiofibromas are benign and vascular neoplasms, which originate characteristically in the posterior lateral wall of the nasopharynx. They account for less than 0.5% of all head and neck tumours. Although angiofibromas extend beyond the nasopharynx usually, they rarely originate outside the nasopharynx. Reports of primary extranasopharyngeal angiofibromas have appeared sporadical...

Paragangliomas of the head and neck are rare neoplasms presented as cervical mass, generally bilateral, that arise from chemoreceptors located at the carotid bifurcation (carotid body tumors), along the vagus nerve (vagal paragangliomas), and in the jugular fossa and tympanic cavity (jugulotympanic paragangliomas). They are typically asymptomatic at the beginning, highly vascular, slow-growing ...

Glomus tumors are rare neoplasms that originate from the glomus bodies, an arteriovenous anastomosis with a specialized vascular structure. The most common site for these tumors is the subungal region of the fingers. Occasionally, glomus tumors are found in the middle ear, trachea, nasal cavities, stomach, and lungs. The occurrence in the parotid regions is very rare. While multiple glomus tumo...

The extensive vascularity of extra and intracranial neoplasms is vulnerable to superselective intraarterial injection of embolic particles. The goal is to inject embolic material such as polyvinyl alcohol particles, gelfoam powder, fibrin glue, microfibrillar collagen, or gelatin microspheres until the vascular blush is completely obliterated. The angiographic supply pattern determines the like...

OBJECTIVE Hemangioendotheliomas (HE) are vascular neoplasms that rarely involve the neuraxis. We report a rare case in the literature of intradural HE of the spinal cord with intramedullary extension. CLINICAL PRESENTATION AND INTERVENTIONS A 41-year-old gentleman presented with low back pain, numbness and urinary retention. Imaging revealed a spinal tumor causing complete blockage at the lev...

1. Smith NP,Wilson Jones E. Multinucleate cell angiohistiocytoma: a new entity. Br J Dermatol. 1985;113:15. 2. Monteagudo B, Labandeira J, Ginarte M, Álvarez JC, De las Heras C, Cacharrón JM, et al. Multinucleate cell angiohistiocytoma. Actas Dermosiiliogr. 2005;96:272-3. 3. Chang SN, Kim HS, Kim SC, Yang WI. Generalized multinucleate cell angiohistiocytoma. J Am Acad Dermatol. 1996;35:320-2. 4...

Polycythemia vera (PV), essential thrombocythemia (ET), and primary myelofibrosis (PMF) are chronic myeloproliferative neoplasms (MPN) characterized by clonal expansion of an abnormal hematopoietic stem/progenitor cell. Their natural history is marked by thrombohemorrhagic complications and a propensity to transform into myelofibrosis and acute leukemia. The understanding of the MPN pathophysio...

The medical literature reports an association between cerebral neoplasms and aneurysm formation. Some related aneurysms are detected during preoperative screening, whereas others are detected during or after surgery. We report a case of a patient with a de novo cerebral feeding artery aneurysm that we managed during glioblastoma surgery. We present a brief review of the literature on the co-exi...