منابع مشابه
Bladder melanosis with concurrent urothelial carcinoma
Bladder melanosis is a rare condition that has been incidentally discovered and reported fewer than 20 times. While independently benign, it has been reported with urothelial cell carcinoma and melanoma. The source of the melanocytes and cause of the melanosis is currently unknown; the presence of melanin pigment is pathognomonic for the disorder. Lesions appearing throughout the bladder are ch...
متن کاملMR Imaging of pial melanosis secondary to a posterior fossa melanotic ependymoma.
A 36-year-old man presented with trouble speaking and bilateral progressive hearing loss. MR imaging and histopathologic results revealed a posterior fossa melanotic ependymoma. Pial surfaces appeared hyperintense on T1-weighted images and hypointense on T2-weighted images. Histopathologic examination revealed that tumor cells and interstitial spaces had abundant melanin accumulation. There was...
متن کاملSubungual squamous cell carcinoma masquerading as a melanotic macule.
Subungual squamous cell carcinoma is a rare condition. Diagnosis is often delayed because it presents with minimal nail changes and mimics a number of benign nail conditions. We report a 43-year-old Chinese man who presented with a three-year history of an indolent melanotic macule of the fingernail. Histology from a punch biopsy revealed a well-differentiated squamous cell carcinoma. Wide loca...
متن کاملMelanotic Choroid Plexus Carcinoma of the Posterior Fossa
BACKGROUND The pigmented or melanotic variant of choroid plexus carcinoma is very rarely encountered. CASE REPORT We report herein a case of melanotic or pigmented choroid plexus carcinoma in the posterior fossa of an 11-year-old female. CONCLUSIONS A histopathological study supported by immunohistochemistry helped the authors to diagnose this rare entity. How to differentiate this tumor fr...
متن کاملNeonatal leukemia cutis presenting with dysmorphic features and cutis laxa
Congenital leukemia is a rare disease with particular biological and clinical characteristics, which differs from those of older children. Its prognosis is generally poor. Its clinical manifestation may vary (hyperleukocytosis, thrombocytopenia, organomegaly) and some patients can develop cutaneous infiltration by leukemic cells (leukemia cutis). We describe a dysmorphic patient with thrombocyt...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of Medicine
سال: 1922
ISSN: 0035-9157
DOI: 10.1177/003591572201500355