Amelanotic melanoma is an atypical that presents without pigmentation and can thus be misdiagnosed as benign neoplasm. Ungual trauma induce amelanotic of the fingernail well pyogenic granuloma (PG). We present case a patient in his 60s with PG-like lesion on third nail plate was preceded by ungual one year ago. A shave biopsy revealed ulcerated nodule composed epitheloid cells melanocytic atypi...

The Malignant melanoma is an uncommon primary malignant tumour of the foot.1 It occurs in different forms like superficial spreading, nodular, lentiginous and acral. Amelanotic/ hypomelanotic melanoma is a non-pigmented variety of cutaneous melanoma accounting for 2-8% of all primary melanomas.2,3 The lesion is usually exophytic and ulcerative with or without metastasis. The lesions usually beg...

We report a 61-year-old, male patient complaining from prolonged lesion on his great toe that has been previously treated surgically. Histopathological examination of toenail specimen revealed the presence of nests of atypical tumor cells that led to the diagnosis of amelanotic malignant melanoma. Four years ago, he was diagnosed as gout due to extreme erythema and edema in the same toe. He has...

Malign melanoma of the nasal cavity that arises at such an unusual location is an exceptional case only occasionally mentioned in the literature. An amelanotic form, which is an uncommon type for this malignancy, also has an unusual radiological appearence from the classic melanotic form. We report here the magnetic resonance imaging (MRI) findings of a 46-year-old man who had a nasal cavity ma...

Although not as common as the other melanomas, amelanotic melanoma often evades diagnosis by masquerading as other pathology. A high index of suspicion is therefore required for early and appropriate intervention. We present a patient who was diagnosed and managed as having paronychia of the middle finger while in actual fact he had a subungual amelanotic melanoma. By the time of his referral t...

Malignant melanomas of the mucosal regions of the head and neck are extremely rare neoplasms accounting for less than 1% of all melanomas. Approximately half of all head and neck melanomas occur in the oral cavity. Less than 2% of all melanomas lack pigmentation, in the oral mucosa however, up to 75% of cases are amelanotic. No etiologic factors or risk factors have been recognized for oral mel...

CASE REPORT We report the clinical features and surgery of a patient with an adenoma of the non-pigmented ciliary epithelium. The adenoma measured 5 × 7 mm. The patient underwent radical ocular surgery consisting of partial iridocyclectomy associated to lamellar sclerouvectomy. DISCUSSION Adenomas of ciliary body can mimic clinically amelanotic melanomas. We present details of the patient's m...

Immunofluorescent staining of tissue from a lung tumor detected 12 years after excision of a primary malignant melanoma of the skin was negative for prekeratin and positive for vimentin, indicating that the tumor was not epithelial in origin and excluding carcinoma from the differential diagnosis. Complementary conventional staining with hematoxylin-eosin confirmed the melanocytic origin of the...

CLINICAL PRESENTATION A 38-year-old woman presented to clinic with a solitary 6.53 4-mm sharply demarcated ivory-white papule on her left temple of unknown duration (Fig 1). The lesion had a smooth surface without scale or ulceration. Small perifollicular dells were also noted. The patient reported no symptoms but believed the lesion recently turned white. She had no other similarly appearing l...