مرکز منطقه ای اطلاع رساني علوم و فناوري -

چكيده لاتين :

A 10-year old Iranian boy was referred with a hard nodule measuring 1.5x 1em on his left forearm since 2 months ago. The lesion was raised and had a dry scab on its surface and the adjacent skin was markedly erythematous. No lymphadenopathy was noticed; and further clinical and physical examinations showed no other abnormalities, The family history was not significant. The lesion was first cleaned with a gauze piece soaked in 70% ethanol. Scrape smears were obtained from the lesion by means of a scalpel blade. Fine needle aspiration cytology (FNAC) was performed from the edge of the lesion using a 22gauge needle and 10mL syringe when the scrape smears failed to demonstrate diagnostic material. Two smears were immediately fixed in 95% ethanol, while the remainders were left as air-dried smears. The fixed smears were stained by the Papanicolaou method, whereas the air-dried smears stained by Wright-Giemsa (figures 1, 2). What is the diagnosis?