Print version ISSN 0036-4665
Rev. Inst. Med. trop. S. Paulo vol.51 no.1 São Paulo Jan./Feb. 2009
Sinusite invasiva por Aspergillus flavus: relato de um caso associado a leucemia aguda bifenotípica
Melissa Orzechowski XavierI; Flávio de Mattos OliveiraII; Valdir de AlmeidaIII; Gabriel ProllaIV; Luiz Carlos SeveroV
IPhD student, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
IIPhD; Mycology Laboratory, Santa Casa Complexo Hospitalar, Porto Alegre, RS, Brazil
IIIOtorhinolaryngologist; MSc student, UFRGS, Porto Alegre, RS, Brazil
IVPhD; Oncologist, Centro de Câncer Mãe de Deus, Porto Alegre, RS, Brazil
VPhD; Department of Internal Medicine, UFRGS, Brazil. Scholarship in Research Productivity 1B, CNPq
Here we report a case of invasive pansinusitis with proptosis of the right eye caused by Aspergillus flavus in an immunocompromised patient with acute biphenotypic leukemia without aggressive therapy response.
Keywords: Leukemia; Aspergillus flavus; Invasive sinusitis.
Descreve-se um caso de pansinusite invasiva com proptose do globo ocular direito causado por Aspergillus flavus em um paciente imunossuprimido com leucemia aguda bifenotípica sem resposta a terapia agressiva.
A 17-year-old white man was diagnosed with acute biphenotypic leukemia and underwent chemotherapy with cytarabine, idarubicin and etoposide (7+3+5) followed by high dose cytarabine. After an initial complete remission of short duration he relapsed and underwent a second course of induction chemotherapy with metoxantrone and etoposide without response. The patient was pancitopenic and with persistence of blasts; biphenotypic acute leukemia (lineages myeloid and T-lymphoid) demonstrated in a bone marrow biopsy.
He was being treated for febrile neutropenia when developed a fever of 39 °C and headache. Physical examination showed edema, hyperemia and proptosis in the right eye with periorbital swelling laterally. Computed tomography (CT) scan of the head revealed opacification of the right maxillary, ethmoidal, sphenoidal and frontal sinuses. Bone erosion was also observed in the medial wall of the right maxillary sinus (Fig. 1). Lung CT scan revealed no abnormalities.
Drained material of the right maxillary sinus was examined and revealed narrow, hyaline, septate hyphae elements, and characteristic dichotomous branching. Fungal culture yielded Aspergillus flavus. Microscopic examination of the biopsy obtained from the sinus mucosa showed chronic inflammation and invasion of the submucosa with numerous fungal hyphae consistent with Aspergillus (Fig. 2).
Although precipitating antibody to A. flavus antigens was negative, the diagnostic was confirmed by the positivity in two serum galactomannan immunoassay, latex agglutination (Pastorex Aspergillus, Sanofi Diagnostic Pasteur) and sandwich enzyme immunoassay (ELISA, 1.34) test (Platelia Aspergillus, BioRad, France).
The patient was receiving amphotericin B at a dose of 1 mg/kg/day since two months before the diagnosis of Aspergillus sinusitis, due to an episode of candidemia. After the definitive diagnostic of fungal sinusitis, itraconazole (200 mg/daily) was associated to the therapy and surgical procedure was indicated (rhinosinusectomy). However, this aggressive treatment was unsuccessful, leukemia and fungal infection progressed, clinical status deteriorated and the patient showed neurological signs leading to death.
Fungal sinusitis, commonly caused by the genus Aspergillus, is frequently described in immunocompetent patients and in AIDS patients as a chronic indolent invasive sinusitis, characterized by a granulomatous response. In neutropenic patients, as observed in our report, the presentation of an Aspergillus sinusitis is a fulminant invasive disease where rapidly progressive, gangrenous mucoperiosteitis is frequently fatal1,4,5,10.
Biphenotypic acute leukemia is an uncommon type of leukemia, which probably arises in a multipotent progenitor cell with capability of differentiating along both myeloid and lymphoid lineages3. Reports of sinusitis by A. flavus in patients with leukemia as described here were already observed with concomitant invasive pulmonary aspergillosis6, as well as rhinosinusitis presentation9. In fact, in the largest series of fungal sinusitis described in the literature, A. flavus was the main etiologic agent, representing 65% (11/17) of all cases2.
Early diagnosis plays a great role in the treatment efficacy of fulminant sinusitis. Therapy is based in surgical remotion of the damaged tissue associated with antifungal therapy, where amphotericin B is the drug of choice1. Despite this aggressive treatment the outcome death is common, mainly due to the great period between the beginning of the disease and the therapy start, which permit the infection progress to a severe clinical form. Thus, in a series of five rhinocerebral mycosis cases, four patients died in spite of the amphotericin B therapy7, as well as in the largest series of fungal sinusitis where nine from the 17 patients evoluted to death2. On the other hand, the development of a severe Aspergillus infection in a patient receiving a fungicide drug, amphotericin B as showed in our report, is very uncommon, since this antifungal should prevent the fungal growth and consequently reappearance of the disease. However, a very similar case was described in the literature8 suggesting that only the antifungal chemotherapy is not efficient in the control of a fungal infection in neutropenic patients. Both reports emphasized the need of preventive measures as ventilation systems with high efficiency particulate airtype filters in rooms of patients included in a risk group7,8.
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Luiz Carlos Severo
Laboratório de Micologia
Hospital Santa Rita
Santa Casa Complexo Hospitalar
Rua Prof. Annes Dias, 285
90020-090 Porto Alegre, RS, Brasil
E-mail: email@example.com; firstname.lastname@example.org
Received: 14 August 2008
Accepted: 6 October 2008