No abstract available.
Acrospiroma*

No abstract available.
Acrospiroma*

No abstract available.
Acrospiroma*

No abstract available.
Acrospiroma*

Poroid hidradenoma is a benign soft-tissue neoplasm with eccrine differentiation. It is a recent variant of the eccrine poroma group. It is made up of poroid and cuticular cells and has both solid and cystic components contained entirely within the dermis. We report a case of poroid hidradenoma in a 55-year-old female who presented with a solitary, bluish nodule on the lateral aspect of her left shin.
Acrospiroma* ; Dermis ; Female ; Humans ; Middle Aged ; Poroma

Because most of the benign skin appendage tumors arise from pluripotential cells that form during adult life and possess the potentiality of differentiating in more than one direction, combinations of several tumor types can occur. We report a case of combined with eccrine poroma, clear cell hidradenoma, and syringocystadenoma papilliferum as a single tumor in a 41-year-old male who had suffered from a tumor on posterior neck for 5 years. The tumor was a relatively oval shaped pedunculated, and rubbery hard mass, measuring 3.5*3.0* 1.3cm in size. The outer surface was variegated and covered with hair. The diagnosis was confirmed by histopathological findings and surgical excision was done.
Acrospiroma* ; Adult ; Diagnosis ; Hair ; Humans ; Male ; Neck ; Poroma* ; Skin

Poroid hidradenoma is a benign tumor with eccrine differentiation. It is a recently described variant of a group of neoplasms known as poromas. This neoplasm shows architectural characteristics of hidradenoma (tumor cells confined within the dermis in both solid and cystic components) and cytologic characteristics of poroid neoplasm (poroid and cuticular cells). We herein report a case of poroid hidradenoma in a 51-year-old woman who presented with a solitary, bluish, tender nodule on the lateral aspect of her right thigh.
Acrospiroma* ; Dermis ; Female ; Humans ; Middle Aged ; Poroma ; Thigh

The discrimination of eccrine and apocrine neoplasms is still in dispute among researchers. To discriminate the differentiation of eccrine and apocrine neoplasms, immunohistochemical stainings with HMFG-1 and GCDFP-15 were performed on 12 specimens of eccrine and apocrine neoplasms, 3 of normal palmar tissues, and 3 of normal axillary tissues. The 12 cases of eccrine and apocrine neoplasms included 3 cases of syringoma, 2 cases of eccrine poroma, 2 cases of hidradenoma, 2 cases of apocrine hidrocystoma, 2 cases of syringocystadenoma papilliferum, and 1 case of spiradenoma. The 3 specimens of palmar tissue were used as the positive control of eccrine unit, and the 3 specimens of axillary tissue as that of apocrine unit. The results are as follows; HMFG-1 was positive in the cytoplasm and luminal surface of normal apocrine units, and also positive in those of eccrine units. Still more, HMFG-1 was documented as positive even in the eccrine poroma which is originated from eccrine unit. GCDFP-1 was positive in both normal eccrine and apocrine units, and glandular structure was stained stronger than ductal structure. In all of eccrine and apocrine neoplasms, syringoma, eccrine poroma, and spiradenoma which were known to differentiate to ductal structure were negative in GCDFP-15, but hidradenoma, apocrine hidrocystoma, and syringocystadenoma papilliferum which were known to differentiate to glandular structure were positive, partially. All these findings suggest that GCDFP-15 might be a useful marker for glandular differentiation rather than ductal differentiation, and both HMFG-1 and GCDFP-15 might not be useful to discriminate eccrine and apocrine neoplasms. Further intensive studies about normal eccrine and apocrine unit should be performed to determine if HMFG-1 could be used as a significant marker of apocrine unit, and it is necessary to develop new methods for the discrimination of eccrine and apocrine neoplasms.
Acrospiroma ; Cytoplasm ; Discrimination (Psychology) ; Dissent and Disputes ; Hidrocystoma ; Phenobarbital ; Poroma ; Syringoma

No abstract available.
Acrospiroma* ; Lip

BACKGROUND: Different distributions of cytokeratins (CKs) have been found in various layers of the epidermis and in the structure of cutaneous appendages. Benign tumors of the epidermis or cutaneous appendages usually retain the characteristic distribution of CKs of their origin. OBJECTIVE AND METHOD: To elucidate the nature and differentiation of various eccrine gland tumors, we performed immunohistochemical staining using a panel of monoclonal antibodies against CKs in a normal eccrire gland, syringoma, eccrine hidrocystoma, eccrine poroma and clear cell hidradenoma. The tissue distribution of various keratins in the normal eccrine gland was compared with that in varioas eccrine gland tumors. RESULTS: With regard to CKs expression, the results indicated that syringoma represents a tumor differentiating toward both the uppermost part of the dermal duct and the lower intraepidermal duct, and eccrine hidrocystoma represents a tumor differentiating toward the luminal cell of the dermal duct of the eccrine gland. Eccrine poroma cells seemed to be most closed related to the uppermost dermal duct of eccrine gland. We also found that analyse distribution of CKs was insufficient to elucidate the histogenesis of clear cell hidradenoma. CONCLUSION: Analysing CKs is helpful in the analysis of epidermal neoplasms with differentiation toward the eccrine gland.
Acrospiroma ; Antibodies, Monoclonal ; Eccrine Glands* ; Epidermis ; Hidrocystoma ; Keratins* ; Peptides* ; Phenobarbital ; Poroma ; Syringoma ; Tissue Distribution