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Successful treatment of Rhizopus arrhizus rhino-orbital-cerebral mucormycosis with isavuconazole salvage therapy following extensive debridement.

ABSTRACT: A 61-year old lady with poorly-controlled type 2 diabetes mellitus was diagnosed with rhino-orbital-cerebral mucormycosis following presentation with sinusitis, ophthalmoplegia, proptosis and facial numbness. She was treated successfully with aggressive surgical intervention including orbital exenteration, accompanied by anti-fungal therapy with liposomal amphotericin B and posaconazole, followed by isavuconazole as salvage therapy. We discuss the challenges around optimising antifungal therapy of this lethal infection in the context of hepatic and renal toxicity.

SUBMITTER: Miller RP

PROVIDER: S-EPMC8010354 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Fungal Invasive Co-Infection Due to Aspergillus fumigatus and Rhizopus arrhizus: A Rhino-Orbital Presentation.

Project description:Aspergillosis and mucormycosis are filamentous fungal infections occurring predominantly in immunocompromised patients. Fulminant process with rapid infiltration of the contiguous tissue is distinctive for both type of fungi. The rhinocerebral co-infection by Aspergillus and Mucorales is very rare and is usually associated in immunocompromised patients with a high mortality rate. This rare co-infection leads to difficulties in diagnosis, and therapeutic delays can result in a poor prognosis. Overall, the treatment of choice is surgical debridement and liposomal amphotericin B. This paper describes a combined aspergillosis and mucormycosis case in a diabetes mellitus type 2 patient with chronic ulcerations of the palatal and cheek. To our knowledge, this is the first report of an uncommon co-infection of Aspergillus fumigatus and Rhizopus arrhizus in a rhino-orbital presentation.

| S-EPMC8704653 | biostudies-literature

Evidence implicating Thamnostylum lucknowense as an etiological agent of rhino-orbital mucormycosis.

Project description:In this report, we present a case of rhino-orbital mucormycosis in a 57-year-old female with poorly controlled diabetes mellitus. The only mold cultured at 25°C, 37°C, and 40°C from a specimen of the nasal crust was identified phenotypically and independently using nuclear ribosomal DNA sequence data as Thamnostylum lucknowense. To our knowledge, this report presents the first data implicating this mucoraceous fungus as a mycotic agent of human infection.

| S-EPMC3318503 | biostudies-literature

A successful treatment of rhinocerebral mucormycosis due to Rhizopus oryzae.

Project description:Mucormycosis is an invasive fungal infection caused by filamentous fungi of the Mucoraceae family. The genera most commonly responsible are Mucor or Rhizopus. The disease occurs mostly in association with diabetic ketoacidosis. Mucormycosis has an extremely high death rate even when aggressive surgery is done. Death rates range from 25-85% depending on the body area involved. A case of rhinocerebral mucormycosis in a 65-year-old diabetic male patient typically presenting as headache, especially in parietal and frontal lobes, with nose and left eye discharge. After clinical and laboratory examination, mucormycosis was diagnosed, and Rhizopus oryzae was isolated. Systemic therapy with amphotericin B administered intravenously then replaced by posaconazole by a combination of aggressive surgery. The patient was treated and followed up for one year. We emphasize the importance of early detection and aggressive treatment in the management of this fatal disease.

| S-EPMC3963327 | biostudies-literature

Risk Based Decision Algorithms for Management of COVID-19 Associated Rhino-orbital Mucormycosis.

Project description:IntroductionCOVID associated mucormycosis is a challenging problem with significant morbidity and mortality implications. COVID affliction, pre-existing medical conditions especially diabetes and steroid prescription are supposed contributors for development of this opportunistic fungal infection. Surgery remains the mainstay of treatment with adequate post-op anti-fungal therapy.Materials and methodsThis is a retrospective analysis of prospectively maintained database of all surgical patients between March-May 2021 at a single centre. Prognosticators such as severity of COVID affliction, use of steroids, extent of rhino-orbital mucormycosis, extent of surgery and outcomes were studied. Descriptive statistics was used to analyse frequency of different variables and chi square test was used to analyse prognostic factors. P value < 0.05 were deemed significant.Results74 patients with an average 30 day follow-up were included. All patients had preceding COVID infection and 71.6% were diabetic and 25.7% were diagnosed during the course of their COVID treatment. Multiple sinus involvement being most common (52.61%), 10.81% underwent orbital exenteration and 24.32% palatectomies were performed. Revision surgeries were warranted in 16.21% patients. 9 patients succumbed to disease/ underlying medical and treatment related complications.ConclusionWe propose a risk assessment based on general condition of patient and severity of mucormycosis infection to decide appropriate strategy for surgical intervention. Early detection and timely and adequate surgery are essential pre-requisites to good outcomes.Supplementary informationThe online version contains supplementary material available at 10.1007/s12070-021-02692-9.

| S-EPMC8324444 | biostudies-literature

Successful treatment of pulmonary mucormycosis caused by Rhizopus microsporus with posaconazole

Project description:Background Mucormycosis is a rare fungal infection occurring chiefly in the lung or the rhino-orbital-cerebral compartment, particularly in patients with immunodeficiency or diabetes mellitus. Among Mucorales fungi, Rhizopus spp. are the most common cause of mucormycosis. Case presentation We report a case of pulmonary mucormycosis caused by Rhizopus microsporus in a young patient with diabetes but no other apparent risk factors. The diagnosis mainly relied on clinical manifestation, positive pulmonary tissue biopsy, and fungal culture. The patient was successfully treated with posaconazole oral suspension and remains asymptomatic at one-year follow-up. Conclusions Pulmonary mucormycosis is a life-threatening condition and posaconazole is an effective treatment for pulmonary mucormycosis caused by Rhizopus microspores.

| S-EPMC8591890 | biostudies-literature

Susceptibility of severe COVID-19 patients to rhino-orbital mucormycosis fungal infection in different clinical manifestations.

Project description:PurposeTo present the different clinical manifestations of rhino-orbital mucormycosis (ROM) co-infection in severe COVID-19 patients.Study designProspective observational clinical study METHODS: Among 32,814 patients hospitalized with the diagnosis of COVID-19 between March 2020 and December 2020 in our center, eleven microbiologically confirmed ROM co-infection cases in severe COVID-19 patients were evaluated.ResultsThere were nine men and two women with a mean age of 73.1 ± 7.7 years. Eight patients had uncontrolled type 2 diabetes with a mean diagnosis duration of 12.1 ± 4.4 years. All patients had COVID-19-associated acute respiratory distress syndrome and received corticosteroids. The mean time interval between COVID-19 diagnosis and ROM diagnosis was 14.4 ± 4.3 days. Seven patients (63.6%) had orbital apex syndrome, and four patients (36.4%) presented with orbital cellulitis. Endophthalmitis was detected in 54.5% of patients, and two of these patients developed retinoschisis. CT scan/MRI revealed sino-orbital involvement in all patients, and three of these had cerebral involvement at initial presentation. All patients received intravenous and retrobulbar liposomal amphotericin B and had undergone radical debridement of involved sinuses. Intravitreal liposomal amphotericin B injected in patients with endophthalmitis. Despite all measures, 63.6% of patients expired.ConclusionsSevere COVID-19 is associated with a significant incidence of ROM with higher mortality rates due to immune dysregulation and the widespread use of steroids. Physicians should be aware of the possibility of this infection in patients with COVID-19. An aggressive multidisciplinary approach can help to reduce mortality.

| S-EPMC8165350 | biostudies-literature

Early Differential Diagnosis of Rhino-Orbito-Cerebral Mucormycosis and Bacterial Orbital Cellulitis: Based on Computed Tomography Findings.

Project description:PurposeTo identify significant clinical and radiological findings that distinguish rhino-orbito-cerebral mucormycosis (ROCM) from bacterial orbital cellulitis (BOC).MethodsThis study was retrospective, multicenter, case-control study that enrolled 34 cases; 14 cases were diagnosed with ROCM and 20 cases were diagnosed with BOC at three different tertiary hospitals between 2005 and 2013. The medical records of all 34 cases were reviewed. The initial clinical manifestations (eyelid swelling, ptosis, extraocular muscle [EOM] limitation, conjunctival injection, and chemosis) and computed tomography (CT) findings (sinus mucosal thickening, full opacification, and air-fluid level) of both diseases were compared.ResultsPatients with diabetes mellitus (DM) and hypertension (HTN) showed higher incidence rates of ROCM than BOC (DM: p < 0.001, HTN: p = 0.036). ROCM cases exhibited more frequent EOM limitation than cases with BOC (100.0% vs. 66.7%, p = 0.024) but less frequent eyelid swelling (35.7% vs. 90.0%, p = 0.002). However, the incidence rates of ptosis, conjunctival injection, and chemosis exhibited no differences between the diseases. Abnormal CT findings were observed in the sinuses of all patients with ROCM, whereas 12 patients with BOC had sinus abnormalities (100.0% vs. 60.0%, p = 0.011). Thickening of the sinus mucosa was more frequent in patients with ROCM than in those with BOC (92.9% vs. 45.0%, p = 0.009). No significant differences in full opacification or air-fluid level were detected between the groups.ConclusionsThe differential diagnosis of ROCM and BOC is difficult. Nevertheless, physicians should consider ROCM when a patient with suspected orbital cellulitis presents with EOM limitation without swollen eyelids or thickening of the sinus mucosa on a CT scan.

| S-EPMC4976984 | biostudies-literature

Successful salvage of mucormycosis infection of the forearm and osteomyelitis of the ulna.

Project description:A 6-month-old child developed cutaneous mucormycosis of the forearm 5 weeks after liver transplantation, which progressed to osteomyelitis of the proximal ulna. Aggressive treatment, which included serial radical debridements, intravenous administration of amphotericin B, and eventually split thickness skin graft coverage resulted in successful functional salvage of the forearm, wrist, and hand. Of the nine previously reported cases of mucormycosis affecting the forearm or hand in immunocompromised patients, all either required amputation of the hand or below elbow amputation, or resulted in the patient's death. Definitive early diagnosis and serial radical debridements may allow salvage of a functional hand.

| S-EPMC2584214 | biostudies-other

An unusual cause of bowel obstruction: Rhizopus Arrhizus diverticulitis.

Project description:Mucormycosis is a fungal infection primarily afflicting immunocompromised or diabetic patients. Its presentation ranges from rhino-orbito-cerebral infections to disseminated mucormycosis with angioinvasion. We present a patient who developed a bowel obstruction one month after bone marrow transplant and was diagnosed with Rhizopus arrhizus diverticulitis despite antifungal therapy since transplantation. She underwent surgical removal with immediate fungal resurgence, declined further invasive intervention and was discharged on palliative isavuconazole. Seven months later she is alive with fungal containment.

| S-EPMC6580311 | biostudies-literature

Isavuconazole treatment of a patient with disseminated mucormycosis.

Project description:We report a patient with relapsed acute myelogenous leukemia after allogeneic stem cell transplantation who developed disseminated mucormycosis due to Rhizomucor pusillus/R. miehei involving lung, brain, and skin. After failing posaconazole and being intolerant to amphotericin, he was treated effectively with isavuconazole for over 6 months despite ongoing treatment for relapsed leukemia.

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