Abstract:Chondromyxoid fibroma (CMF) is a rare, benign and potentially aggressive cartilage forming bone tumour and accounts for less than 1% of primary bone tumour. It usually affects the metaphysis of long bones in first or second decades of life. It occurs in males more often than females. Because of rarity of CMF and its varied morphology, it can be confused with malignant tumour and adds difficulty in diagnosis. Herein, we report a case of CMF in a 32 year old female involving the proximal end of tibia.
A 34-years-old male presented with a mass over the right chest wall, below the nipple, of 18 months duration. Physical examination revealed a tense, cystic, painless swelling of size, 5 cm. Transillumination was positive. Chest ultrasound revealed a heterogeneous mass with anechoic and cystic components, with mild vascularity. CT-scan showed a subcutaneous mass which presented dual solid and cystic components. A clinical diagnosis of a cyst with malignancy was suspected. A total surgical excision was performed and the mass was submitted for a histolopathologic examination.Gross examination revealed a skin covered, well-circumscribed, fluctuant mass which measured 5cmx5cm×3cm. The cut surface showed a variegated appearance with a multilocular cystic lesion which was filled with mucoid cloudy fluid and solid papillary areas. The multilocular cystic areas showed intracystic papillary fronds of tumour. The tumour was greyish white in appearance. The lower border revealed subcutaneous fat. The stretched shiny skin on the external surface and around the tumour did not reveal hair [Table / Fig-1A,1B]. Histology revealed a well-circumscribed, solid-cystic Pathology Section aBstRaCt Papillary poroid hidradenoma is a very rare entity which belongs to poroid neoplasms, which represents 10% of sudoriferous tumours. It can be easily misdiagnosed as a malignant neoplasm. A 34-years-old male presented with an asymptomatic mass over the right chest wall, below the nipple, of 18 months duration. Clinical examination revealed tense cystic swelling which revealed hypoechoic and solid components on imaging. Clinically, a malignancy was suspected and a surgical excision was done. Histology and immunoreactivity to pan cytokeratin, epithelial membrane antigen and carcino-embryonic antigen confirmed the diagnosis. We are reporting this case because of the rarity of its presentation.
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