A 59-year-old male patient was admitted to our university hospital (Botucatu, SP, Brazil) complaining of a perianal suppurative ulcer developed two months before the first medical consultation. He was under therapy with prednisone 40 mg/day for six months due to a presumed diagnosis of a drug reaction. On physical examination, a clean 10-cm diameter phagedenic perianal ulcer (Figure ) and two longitudinal suppurative ulcers on the inguino-crural region were observed. During investigation, and soon after reducing the corticosteroid dose, disseminated erythematous papules and nodules were observed in the upper limbs (Figure ).Histopathology of the perianal ulcer revealed a dense histiocytic dermal infiltrate and a granulomatous inflammatory response with central caseous necrosis (Figure ). Fite-Faraco staining showed a few acid-fast bacilli and the hypothesis of cutaneous tuberculosis was raised. The histopathology of upper limbs papular and nodular lesions showed foamy macrophages with globi of bacilli, suggesting lepromatous leprosy (Figure ). The perianal and inguinal ulcers were considered uncommon manifestations of type 2 leprosy developed when corticosteroid was gradually diminished. The patient was treated as for multibacillary leprosy with multidrug therapy and thalidomide.\nFour weeks later, the patient had fever, weight loss, asthenia and worsening of the perianal ulcer (Figure ), but without erythema nodosum leprosum. With this clinical picture, new investigation was developed. The tuberculin skin test was positive (20 × 20 mm) and culture of M. tuberculosis – using a biopsy sample from the perianal ulcer – on Löwenstein-Jensen medium was positive (Figure ). Polymerase chain reaction (PCR) and DNA analysis from upper limb skin samples were positive for M. leprae (Figure ). With the new information the patient was finally diagnosed as presenting simultaneously lepromatous leprosy – type 2 reaction – and cutaneous tuberculosis expressed by the perianal ulcer. Screening for HIV, HBV or HCV infection as well as lung, renal or colon compromising were negative. Hence, the patient was treated with isoniazid, ethambutol and rifampin for nine months with complete healing of the perianal and inguinal lesions after two months (Figure ). After the tuberculosis treatment, the patient was submitted to additional multidrug therapy for 12 months with dapsone, rifampin and clofazimine with complete cure of leprosy.
A 65-year-old non-hypertensive, non-diabetic man presented with history of left sided chest pain associated with productive cough and breathlessness for seven days. There was no history of fever, haemoptysis and exertional increase in breathlessness. The patient was referred to our teaching hospital from Green Pastures Hospital (GPH), a tertiary care referral centre for leprosy. The patient was treated for leprosy with WHO multidrug therapy for multibacillary leprosy. The patient was currently on treatment for ulnar neuritis with prednisolone 30 mg once a day for last three months. There was no past history of tuberculosis as per GPH records or information provided by the patient.\nClinical examination revealed numerous hypopigmented skin lesions varying in size from 2 to 10 centimeters over the trunk. The left ulnar nerve was thickened. There was dullness and decreased breath sounds in the left infrascapular and axillary areas.\nThe laboratory investigations revealed hemoglobin: 14.4 mg/dl; total leukocyte count: 19.5×103; erythrocyte sedimentation rate: 60 mm at the end of first hour; serum creatinine: 1.4 mg/dl; and random blood sugar: 91 mg/dl.\nOne out of three sputum samples tested was positive for acid fast bacilli and the chest radiograph showed loculated pleural effusion suggesting long standing pleural collection in left hemi thorax with infiltrations bilaterally, more on left side.\nA diagnosis of borderline leprosy with concomitant pulmonary tuberculosis was made. The patient was referred to DOTS clinic of our teaching hospital and started on category-I treatment according to the guidelines of national tuberculosis programme of Nepal. The oral prednisolone was subsequently tapered and stopped. The patient's general condition improved and was on regular follow up.