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Fulltext Histoplasmosis of the larynx

Subramaniam S, Abdullah AHR, Hairuzah I

Med J Malaysia, 2005 Aug;60(3):386-8.
PMID: 16379201

Primary histoplasmosis of the larynx is not a common disease. Most cases of laryngeal histoplasmosis results from hematogenous spread of disseminated histoplasmosis usually originating from pulmonary infection by Histoplasma capsulatum. We report a 52-year-old male chronic smoker who had prolonged hoarseness and was initially diagnosed with laryngeal carcinoma. However, biopsy of the laryngeal mucosa confirmed the diagnosis of histoplasmosis. There were no signs of pulmonary or systemic involvement. Treatment with intravenous amphotericin B was given for a week and oral ketaconazole was given for a month with complete resolution of symptoms.

Matched MeSH terms: Histoplasmosis/pathology*
Fulltext Disseminated histoplasmosis mimicking miliary tuberculosis: a case report

Chan KS, Looi LM, Chan SP

Malays J Pathol, 1993 Dec;15(2):155-8.
PMID: 8065179

A 35-year-old Chinese man who was known to have insulin-dependent diabetes mellitus was admitted for fever and weight loss. During his hospital stay, he fell to his death from his ward at the twelfth floor. The clinical features, radiological findings and gross organ changes at autopsy closely simulated miliary tuberculosis. Histology, however, revealed extensive necrosis of the adrenal glands, lungs, spleen, kidneys and thyroid associated with the presence of Histoplasma capsulatum organisms. This case highlights the similarity both clinically and pathologically between histoplasmosis and tuberculosis and emphasizes the need to be aware of this infection in a nonendemic area among patients with a compromised immune system.

Matched MeSH terms: Histoplasmosis/pathology*
Cystic tumor of papillary muscle of heart: a rare finding in sudden death

Murty OP

Am J Forensic Med Pathol, 2009 Jun;30(2):201-3.
PMID: 19465820 DOI: 10.1097/PAF.0b013e31819d9af5

Primary cystic tumors of papillary muscles of the heart are extremely rare. Here, one case of unusual cystic tumor in papillary muscle of the heart in a 37-year-old Myanmar migrant worker has been reported. He came to Malaysia 2 weeks before and one morning was found dead in sleep. Autopsy revealed cystic lesion in the papillary muscle of the mitral valve of heart, which was prolapsing into ventricular cavity. The cyst had white-jelly like sticky mucus material. The cyst was present in papillary muscle with slight invasion in septum area; it was lined by cuboidal-columnar epithelium and contained mucinous contents. There was no evidence of an inflammatory reaction in the cyst and in cardiac muscles. In addition to cystic neoplasm, the deceased also had histoplasmosis of the lungs. The case is presented with macroscopic and microscopic photographs of the cyst and histoplasmosis of the lungs. This case is reported because of its rarity, unique position, and unusual appearance.

Matched MeSH terms: Histoplasmosis/pathology
Fulltext Disseminated histoplasmosis from a calcified lung nodule after long-term corticosteroid therapy in an elderly Japanese patient: A case report

Kobayashi K, Asakura T, Kawada I, Hasegawa H, Chubachi S, Ohara K, et al.

Medicine (Baltimore), 2019 Apr;98(17):e15264.
PMID: 31027078 DOI: 10.1097/MD.0000000000015264

RATIONALE: Histoplasmosis occurs most commonly in Northern and Central America and Southeast Asia. Increased international travel in Japan has led to a few annual reports of imported histoplasmosis. Healed sites of histoplasmosis lung infection may remain as nodules and are often accompanied by calcification. Previous studies in endemic areas supported the hypothesis that new infection/reinfection, rather than reactivation, is the main etiology of symptomatic histoplasmosis. No previous reports have presented clinical evidence of reactivation.
PATIENT CONCERNS: An 83-year-old Japanese man was hospitalized with general fatigue and high fever. He had been treated with prednisolone at 13 mg/d for 7 years because of an eczematous skin disease. He had a history of travel to Los Angeles, Egypt, and Malaysia 10 to 15 years prior to admission. Five years earlier, computed tomography (CT) identified a solitary calcified nodule in the left lingual lung segment. The nodule size remained unchanged throughout a 5-year observation period. Upon admission, his respiratory condition remained stable while breathing room air. CT revealed small, randomly distributed nodular shadows in the bilateral lungs, in addition to the solitary nodule.
DIAGNOSIS: Disseminated histoplasmosis, based on fungal staining and cultures of autopsy specimens.
INTERVENTIONS: The patient's fever continued despite several days of treatment with meropenem, minocycline, and micafungin. Although he refused bone marrow aspiration, isoniazid, rifampicin, ethambutol, and prednisolone were administered for a tentative diagnosis of miliary tuberculosis.
OUTCOMES: His fever persisted, and a laboratory examination indicated severe thrombocytopenia with disseminated intravascular coagulation. He died on day 43 postadmission. During autopsy, the fungal burden was noted to be higher in the calcified nodule than in the disseminated nodules of the lung, suggesting a pathogenesis involving endogenous reactivation of the nodule and subsequent hematogenous and lymphatic spread.
LESSONS: Physicians should consider histoplasmosis in patients with calcified nodules because the infection may reactivate during long-term corticosteroid therapy.

Matched MeSH terms: Histoplasmosis/pathology*
Oral histoplasmosis presenting as oral ulcer in a non-HIV patient

Rahman MT, Bakar NH, Philip R, Shamsudin AR

Southeast Asian J Trop Med Public Health, 2004 Jun;35(2):388-90.
PMID: 15691142

A 40-year-old man presented with chronic mouth ulcer for the last six months. Histopathological examination of the biopsy from the lesion confirmed a diagnosis of histoplasmosis. Although histoplasmosis commonly manifests in immunocompromized patients, like HIV, the present case was negative for HIV. Histoplasmosis is endemic in certain parts of the world and it is comparatively rare in the South Asian region, particularly Malaysia. Thirty-seven cases of histoplasmosis were reported from Malaysia (Ng and Siar, 1996), between July 1967 and October 1997. Despite the apparent rarity of the disease, clinicians and pathologists should be aware of the possibility of histoplasmosis when cases of oral ulcer are encountered.

Matched MeSH terms: Histoplasmosis/pathology
Review of oral histoplasmosis in Malaysians

Ng KH, Siar CH

Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 1996 Mar;81(3):303-7.
PMID: 8653464

We reviewed biopsy records for 37 cases of oral histoplasmosis for patient characteristics, clinical features, and histopathologic findings. These represented cases diagnosed in the Division of Stomatology, Institute for Medical Research, Kuala Lumpur between July 1967 and October 1994. All were male patients who ranged in age from 11 to 79 years (mean age, 56.7 years). There were 40.6% Malays, 37.8% Chinese, 18.9% Indians, and 2.7% other races. Five patients with mouth lesions as the initial presenting lesions were proven to be cases of disseminated histoplasmosis. In the remaining cases apart from the biopsy-proven oral histoplasmosis lesions, the extent of the disease elsewhere was unknown. The majority of these lesions involved the gingiva, tongue, and palate in decreasing order of frequency. The most frequent presenting symptom was oral mucosal ulceration. Squamous cell carcinoma and tuberculosis were the two most common clinical differential diagnoses. Our present findings compare favorably with published reports from other regions.

Matched MeSH terms: Histoplasmosis/pathology