CD34-positive expression in benign nasal glomus tumour: two case reports and a literature review

An Atypical Lesion in the Nasal Cavity: Glomus Tumor

Glomus tumors are rare vascular tumors that originate in the glomus bodies. These tumors are uncommon in the head and neck region and are extremely rare in the nasal cavity. Intranasal glomus tumors mostly have a clinical and radiologic indolent behavior. This report presents the clinical, pathological, and radiological features of a 60-year-old female patient with a glomus tumor that has an atypical size and location.

Recurrent Epistaxis and Unilateral Intranasal Mass in A Teenager

BACKGROUND Epistaxis in children is a common problem encountered in outpatient clinics and emergency departments. A wide variety of conditions may cause recurrent epistaxis in children. We describe clinical, radiologic, and histologic features of a lobular capillary hemangioma presenting as a rapidly growing intranasal mass in a child with recurrent epistaxis. CASE REPORT A 16-year-old male presented with a 2-month history of recurrent unilateral epistaxis requiring multiple visits to the emergency department. The child had nasal obstruction, snoring, no recurrent sinus infections, no anosmia nor hyposmia, no weight loss, no night sweats, no fever, no decreased activity, and no easy bruising. He denied any history of local trauma. On physical examination, a fleshy violaceous mass was found, protruding from and obliterating the right nasal cavity. Magnetic resonance imaging documented an avidly enhancing mass centered at the right nasal vestibule. Upon resection, histologic evaluation indicated a pyogenic granuloma. At the 2-month followup, the surgical site was healed with no evidence of recurrent lesion. CONCLUSIONS Lobular capillary hemangioma, although uncommon, should be considered in the differential diagnosis of recurrent epistaxis and intranasal mass in children.

Co-expression of CD34 and h-caldesmon in a benign meningioma-like dermal neoplasm, a case report

Meningioma-like dermal tumor with diffuse coexpression of CD34 and hcaldesmon is rarely reported. Herein, we report a case of a 58-years-old woman who complained of a solitary dome-shaped papule on the left hand. An ellipse of skin measuring 1 x 0.5 x 0.5 cm was excised and sent for histopathological evaluation. Upon sectioning, the specimen showed a whitish firm dermal nodule measuring 3 mm in its greatest dimension. Microscopic examination revealed a well-circumscribed barely encapsulated dermal lesion showing compact round whorled sheets formed of round to ovoid uniform cells with abundant pink cytoplasm. Occasional intranuclear vacuoles were seen. A minor capillary-sized vascular component was seen in the background. Immunohistochemical (IHC) study revealed a diffuse positivity of tumor cells to CD34 and h-caldesmon along with faint reaction to Smooth Muscle Actin (SMA) and ER. However, Desmin, S100, HMB45, EMA, Pan Cytokeratin, and Chromogranin were all negative. Ki67 was very low (1%). The main differential diagnoses of the current lesion are meningioma and glomus family tumors. While the current lesion is morphologically reminiscent of cutaneous meningioma; neither the location nor the IHC stains support that diagnosis. The glomus family is highly suggestive. However, the location, the compact nature of the proliferation, and the positivity of CD34, all are unusual in such entities.

Lobular capillary hemangiomas: Case report and review of literature of vascular lesions of the nasal cavity

Vascular tumors of the nasal cavity can represent a variety of pathologies. In this case report, we discuss two patients presenting with a large vascular lesion occupying the nasal cavity. Significant bleeding was encountered during the initial attempts for endoscopic surgical resection. One lesion was successfully excised following preoperative embolization while a second following sphenopalatine artery vascular ligation. In both cases, final pathology showed lobular capillary hemangioma (LCH). We present a literature review and discussion of LCH and other vascular tumors that present in the nasal cavity. In addition, we discuss the utility of pre-resection vascular control of these tumors.

Striking pathology gold: a singular experience with daily reverberations: sinonasal hemangiopericytoma (glomangiopericytoma) and oncogenic osteomalacia

Sinonasal hemangiopericytoma-like tumors(SNHPC)(glomangiopericytomas)were originally conceived as histologically similar to, but biologically distinct from, their soft tissue counterparts. Re-evaluation of "hemangiopericytiomas" has determined that SNHPC (glomangiopericytomas) represent bona-fide pericyte-derived tumors, whereas most soft tissue neoplasms previously designated as hemangiopericytomas represent cellular variants of solitary fibrous tumors or other lesions with a hemangiopericytomalike growth pattern. We present an interesting case of a woman with SNHPC (glomangiopericytomas) causing oncogenic osteomalacia, and discuss the recent advances in our understanding of phosphaturic mesenchymal tumors. This particular case is an example of "Striking Pathology Gold"-a situation where the pathologist actively guides the diagnostic process, and witnesses its repercussions. "Striking Pathology Gold" may be a rare event in one's career. However it serves to remind us of our place in the world as physicians. Working behind the scenes, we quietly change the course of countless individual destinies for the better.