[Error of interpretation of cytodiagnosis in a case of vegetating fistulous hidradenoma].
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Clear cell hidradenoma is a rare benign skin appendageal tumor whose imaging findings have been even more rarely reported. We experienced a large clear cell hidradenoma of the left elbow in a 22-year-old man. MRI revealed a complex solid and cystic appearance with enhancing solid component.
Eccrine porocarcinoma is a rare malignancy of eccrine sweat gland usually presenting as a long-standing growth on the lower extremity. It is more common in females. It may arise in a pre-existing eccrine poroma. A case presenting as nodular swelling over the dorsum of left hand in a 56-year-old man is described. Cytologic and histologic examination along with flow cytometric analysis is presented.
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We present an unusual case of eccrine porocarcinoma in that diagnosis was delayed for many years after the initial lesion appeared, resulting in relatively large tumor.
We report two cases of eccrine porocarcinoma (EPC), one of intrepidermal EPC (IEEPC) and one of intradermal invasive EPC (IDEPC) in an immunohistochemical study of cytokeratins (CK) using nine different anti-keratin antibodies against CK1, 7, 8, 10, 14, 16, 17, 18 and 19. IEEPC expressed terminal differentiated CK1 and CK10. In contrast, IDEPC expressed simple-epithelial keratins such as CK7, 8, 18 and 19. Keratin expression of IEEPC preserves the immunophenotypes of normal epidermis. IDEPC, however, expresses poorly differentiated keratin. These results suggest that the keratin profiles of EPC are correlated with the invasive degree and reflect the clinical prognosis of EPC.
We report a case of nodular hidradenoma in a 90 year old male, presenting with an eyelid swelling. The cytomorphological features are described with special emphasis on cytoplasmic granularity and tubule formation as an important feature in diagnosing and differentiating eccrine tumors from other adnexal neoplasms on FNAC.
The eccrine poroma is a rare benign sudoral tumour, which creates a fleshy formation. The diagnosis is made according to the anatomopathological study. The usual site is the sol, but in rare cases, other sites have also been reported. The authors report three cases of eccrine poroma localised in the scalp with literature review.
Eccrine porocarcinoma may arise from eccrine poroma or it may occur de novo. We present a rapidly growing occipital malignant eccrine poroma on the scalp following to a radiotherapy for cervical carcinoma. A wide excision with skin grafting resulted no recurrence during a 1-year followup. Although malignant transformation is well known for other skin cancers this was not reported for eccrine poroma.