A 14-yr-old girl complained of nasal blockage accompanied by yellowish mucopurulent rhinorrhea. No history of asthma, other allergic diseases, or medical or surgical treatment was identified. No potential risk factors such as diabetes mellitus, immunodeficiency, or previous facial trauma were found. Laboratory investigations revealed a white blood cell count of 15,600/mm3 with 3.7% eosinophils and a high level of serum IgE, 149 IU/mL (0-100 IU/mL). The results of the multiple antigen simultaneous test (MAST) for specific serum IgE antibodies against Aspergillus, Penicillium, Cladosporium, and Alternaria were negative. The results of the Uni-CAP system (Pharmacia, Sweden) for specific serum IgE antibodies against Aspergillus fumigatus, Cladosporium herbarum, and Alternaria tenuis were in the normal range. A non-enhanced computed tomography (CT) scan of the ostiomeatal unit revealed soft-tissue opacification in the right frontal, ethmoid, and maxillary sinuses (). Bony remodeling and destruction was found in the right lamina papyracea. Endonasal endoscopic surgery was undertaken. Mucosal swelling and polyposis were found in the right middle meatus, maxillary sinus, ethmoid sinus, and frontal sinus, which encroached on the right lamina papyracea. The frontal recess was filled with mucoid secretions, which were collected for histological and microbiological investigations. Histological examination of the material obtained from the frontal recess showed allergic mucin, characterizing Charcot-Leyden crystals, numerous eosinophils, and a few septate fungal hyphae ().\nThe material was plated onto PDA plates and incubated at room temperature, 30℃, and 37℃. Growth of a white, densely woolly mold with a yellow-to-brown reverse was observed after 3 days at all temperatures (). The fungus was sensitive to cycloheximide (400 µg/mL) and produced a tart and disagreeable smell, particularly at 37℃. Microscopic examination of the mycelia showed no conidia or sporangiospores, but revealed both narrow and wide hyphal filaments, which were hyaline, septate, branched hyphae without clamp connections and spicules (). Macroscopic examination did not reveal structures such as fruiting bodies even after 2 months of culture.\nThe ITS and D1/D2 regions of the 26S ribosomal DNA was sequenced. The ITS region (including the 5.8S rRNA gene) and the 26S rRNA gene D1/D2 domains were amplified with the following primer pairs: pITS-F (5'-GTCGTAACAAGGTTAACCTGCGG-3') and pITS-R (5'-TCCTCCGCTTATTGATATGC-3'), and NL1 (5'-GCATATCAATAAGCGGAGGAAAAG-3') and NL4 (5'-GGTCCGTGTTTCAAGACGG-3') []. The fungus was identified (Basic Local Alignment Search Tool, ) as S. commune (accession number HM595605.1) with 100% homology. The patient was given oral corticosteroids and antibiotics for 1 week after surgery. Topical nasal steroids were administered to suppress the immune response and minimize recurrence. The patient has been followed up for 3 months and shows no signs of recurrence, except mild mucosal swelling.
A 25-year-old female with a two-year history of erythema, papules, nodules, and scales on her sole of left foot was presented to our outpatient center. She has no history of autoimmue disease and untreated with immunosuppressive therapy. Considering her pregnancy, she was not given treatments for 1 year. The left foot skin lesion on the medial and lateral margins and on the fourth toe dorsum became enlarged with evident pain after more than 1 year (Fig. ). Approximately 1 month before visiting our department, she received treatment ineffectively in a local clinic, and the diagnosis was unclear.\nSamples were obtained by the scraping of lesion and for light microscopy. Hyphae were observed by microscopic examination (Fig. ).\nWe carried out a skin tissue biopsy, which showed multiple granulomatous nodules (Fig. ). The Ziehl–Neelsen stain was negative. Periodic acid–Schiff (PAS) and Grocott methenamine silver (GMS) staining were carried out two times. Results were also negative. Biopsy specimens were also inoculated onto two kinds of media: Sabouraud’s dextrose agar (SDA), where one of which contained chloramphenicol and cycloheximide, and the other one contained chloramphenicol only. After being cultured on SDA at 27 °C for 7 days, spreading-woolly-white colonies grew on the inoculation sites of media containing chloramphenicol only and there,s no other colonies grew (Fig. ). The colonies produced an unpleasant smell like biogas. No colony was observed on the media with chloramphenicol and cycloheximide. Clamp connections, spicules, tear-like secretions, and medusa-like isomers were observed on the slide culture at 27 °C after 3 days (Fig. ). Urease activity tests were also performed. Trichophyton rubrum standard strain and the isolated strain were cultured on urease media at 27 °C for 7 days. The T. rubrum standard strain was negative, whereas the isolated strain turned red (Fig. ).\nSequencing of large subunit rDNA was performed by using the E.Z.N.A.™ Fungal DNA Mini Kit (Omega Biotek, USA). We utilized set primers for the region of internal transcribed spacer (ITS) and performed PCR. The PCR primers were ITS1: 5′-TCCGTAGGTGAACCTGCGG-3′ and ITS4: 5′-TCCTCCGCTTATTGATATGC-3′. The PCR-amplified DNA was matched with that of S. commune (Nos. KP 326677.1 and KP 004975.1) with a homology of 100%. After identification, the sequence was submitted to the GenBank (MF 495704).\nPathological finding and mycological examination indicated a cutaneous granuloma caused by S. commune. Oral itraconazole (100 mg) was applied twice a day. The rashes on the left foot and the pain regressed after 1 month of treatment (Fig. ). Follow-up is currently under way.