Qap (Anatomical Pathology) 

QAP Peer Review

AP98
Case History: F/71, with a recurrent nasal tumor, diagnosed 6 month ago as a glomus tumor.
Intended diagnosis: Hemangiopericytoma-like tumor of nasal cavity. Contributed by:FML
Code Diagnosis Comment Score
anonymous Nasal haemangiopericytoma-like tumour (100%). -  100
anonymous Haemangiopericytoma-like tomour of nasal cavity, 100%. Nil  100
anonymous Hemangiopericytoma-like tumor, 100% It is not unreasonable to call this a glomus tumor, especially in small biopsies. In fact, the two share significant morphologic overlap.  100
anonymous Haemangiopericytoma-like tumour of the nasal cavity (100%) Local recurrences may develop but metastases do not occur.  100
anonymous Hemangiopericytoma-like tumor confirm with immunostaining for actin  100
anonymous Hemangiopericytoma-like tumor. 100%. Nil.  100
anonymous Hemangiopericytoma 100% nil  100
anonymous Nose - haemangiopericytoma-like tumour 100% Nil  100
anonymous Haemangiopericytoma (90%) Synovial sarcoma, monophasic (10%) A reticulin stain may help. Also perform immunostaining for cytokeratin, EMA, S100 protein to rule out synovial sarcoma and neurogenic sarcoma. EM may also be userful.  100
anonymous Haemangiopericytoma-like tumour 100% nil  100
anonymous HEMANGIOPERICYTOMA-LIKE TUMOR 100% This tumor was called by some authors as well differentiated hemangiopericytoma. The behaviour is better than hemangiopericytoma at other sites.  100
anonymous Spindle cell tumour with focal haemangiopericytoma pattern 100%, Dx: Haemangiopericytoma, sinonasal; Other DDx: Monophasic synovial sarcoma; Myoepithelioma, minor salivary glands; Meningotheliomatous tumour (fibrous meningioma); Solitary fibrous tumour 1. Sinonasal haemangiopericytoma is a low grade tumour. It can recur locally but rarely metastasizes. There is no necrosis nor cellular pleomorphism and mitotic figure is about 1/50HPF in the present case. 2. Special investigations: reticulin stain; Immunohistochemical stains: Cytokeratins, EMA, SM actin, desmin, S-100, CD34; EM.  80
anonymous SYNOVIAL SARCOMA, monophasic. Probability: 100% Confirm with immunohistochemical stain for cytokeration which will demonstrate clusters of positive cells.  40
anonymous Hemangiopericytoma of nasal cavity Some authors use hemangiopericytoma-like tumor for well-differentiated form, with rare mitosis and absence of necrosis as the present case.  100
anonymous Haemangiopericytoma-like tumour (Haemangiopericytoma), 100% Nil.  100