Dermatopathology Cases

Image 1 Image 2 Image3 Image 4 Case 63 A 35 year old male with maculopapular eruption. Patient also has history of acute lymphadenopathy and uveitis. Answer

Chondroid Syringoma Visit: Dermatopathology site Visit: Pathology of Chondroid Syringoma Abstract: Chondroid syringoma: a rare tumor of the chest wall. Ann Thorac Surg.2010 Mar;89(3):983-5. Chondroid syringoma, an uncommon, slow-growing, benign, sweat-gland tumor located on the upper right chest wall of a 66-year-old woman is presented. This skin adenexal tumor is typically located on the head and neck region. The unusual location of chondroid syringoma made an accurate preoperative diagnosis difficult, and diagnosis was achieved only by excisional biopsy and histopathologic examination. Total surgical excision remains the best therapeutic option to avoid tumor recurrence and close follow-up is recommended because of a rare possibility of malignant transformation and visceral metastases. Chondroid syringoma of the hand.Scand J Plast Reconstr Surg Hand Surg.2009;43(5):291-3. Chondroid syringoma is a rare cutaneous tumour that usually arises in the head and neck region and is rarely see...

Image1 Image2 Image 3 Image4 Image4 Case 62 A 40 year old male with a nodule (2.5cm in size) on the forehead. Answer

Dermatopathology Quiz - Case Index : Case 41 = Fibrous Papule of the Face (Fibrous Papule of the Nose) Case 42 = Lupus Panniculitis (Lupus Profundus) Case 43 = Subcutaneous Panniculitis-like T-Cell Lymphoma Case 44 = Necrobiotic Xanthogranuloma Case 45 = Lymphomatoid Papulosis Case 46 = Hailey-Hailey Disease Case 47 = Porokeratosis of Mibelli Case 48 = Cutaneous Leiomyoma (Piloleiomyoma) Case 49 = Mycobacterium Marinum Infection (Fish Tank Granuloma ; Swimming Pool Granuloma) Case 50 = Cutaneous Herpes Simplex Infection Case 51 = Prurigo Nodularis Case 52 = Acquired Tufted Angioma Case 53 = Merkel Cell Carcinoma Case 54 = Ichthyosis Vulgaris Case 55 = Discoid Lupus Erythematosus Case 56 = Lichen Planus Case 57 = Erythema Multiforme Case 58 = Fixed Drug Eruption Case 59 = Pigmented Spindle Cell Nevus of Reed. Case 60 = Spitz Nevus

Targetoid Hemosiderotic Hemangioma (Hobnail Hemangioma) Visit: Dermatopathology site Visit: Targetoid Hemosiderotic Hemangioma (Hobnail Hemangioma) Abstract: Hobnail hemangiomas (targetoid hemosiderotic hemangiomas) are true lymphangiomas.J Cutan Pathol.2004 May;31(5):362-7. BACKGROUND: Hobnail hemangioma (targetoid hemosiderotic hemangioma) is a small benign vascular tumor of the superficial and mid-dermis. In contrast to its well-characterized histology, it has been unclear whether this tumor arises from blood vessel endothelial cells (BECs) or lymphatic vessel endothelial cells (LECs). METHODS: We analyzed 10 hobnail hemangiomas by immunohistochemistry, using the recently described lymphatic endothelial cell marker, D2-40. For comparison, CD31, CD34, and alpha-smooth muscle actin expression were studied in consecutive sections of the paraffin-embedded tissues. RESULTS: In all analyzed vessels, D2-40 labeled exclusively LECs, whereas BECs were consistently negative. In contrast to c...