TY - JOUR KW - ROM therapy KW - Multidrug therapy KW - leprosy KW - Histoid leprosy KW - Egypt AU - Bakry O A AU - Attia A M AB - Histoid leprosy is a rare but well-defined entity with specific clinical, histopathologic, and bacteriologic features. We present a case of histoid leprosy in an 84-year-old Egyptian male in view of the rarity of this condition. The patient presented with erythematous itchy discrete and coalescent papules that were distributed bilaterally and symmetrically on the front and back of the trunk. Before approaching us, he was initially misdiagnosed as a case of pityriasis rosea. There was no mucosal or facial affection and the patient’s general examination was normal. Routine hematologic investigations, urine analysis, liver and renal function tests were all normal. Slit skin smear revealed acid-fast bacilli of BI - 6+ and MI - 50-60%. Histopathologic examination of hematoxylin and eosin-stained section revealed atrophic epidermis with flattened rete ridges and dermal infiltration by nodular granulomata formed of spindle shaped histiocytes with pyknotic nuclei oriented in a storiform pattern. Fite’s stain for lepra bacilli showed plenty of acid fast bacilli. So, the diagnosis of histoid leprosy was made. Therefore, ROM therapy (rifampicin 600 mg, ofloxacin 400 mg, minocycline 200 mg) was started and followed by multi-drug therapy for 2 years. BT - Acta dermatovenerologica Croatica C1 - http://www.ncbi.nlm.nih.gov/pubmed/23317487 CN - BAKRY 2012 IS - 4 J2 - Acta Dermatovenerol Croat LA - eng N2 - Histoid leprosy is a rare but well-defined entity with specific clinical, histopathologic, and bacteriologic features. We present a case of histoid leprosy in an 84-year-old Egyptian male in view of the rarity of this condition. The patient presented with erythematous itchy discrete and coalescent papules that were distributed bilaterally and symmetrically on the front and back of the trunk. Before approaching us, he was initially misdiagnosed as a case of pityriasis rosea. There was no mucosal or facial affection and the patient’s general examination was normal. Routine hematologic investigations, urine analysis, liver and renal function tests were all normal. Slit skin smear revealed acid-fast bacilli of BI - 6+ and MI - 50-60%. Histopathologic examination of hematoxylin and eosin-stained section revealed atrophic epidermis with flattened rete ridges and dermal infiltration by nodular granulomata formed of spindle shaped histiocytes with pyknotic nuclei oriented in a storiform pattern. Fite’s stain for lepra bacilli showed plenty of acid fast bacilli. So, the diagnosis of histoid leprosy was made. Therefore, ROM therapy (rifampicin 600 mg, ofloxacin 400 mg, minocycline 200 mg) was started and followed by multi-drug therapy for 2 years. PY - 2012 SP - 256 EP - 59 T2 - Acta dermatovenerologica Croatica TI - Histoid leprosy: Case report UR - http://adc.mef.hr/index.php/adc/article/view/736 VL - 20 ER -