Adenocarcinoma ; pathology ; Carcinoma, Acinar Cell ; pathology ; Carcinoma, Adenosquamous ; pathology ; Carcinoma, Basal Cell ; pathology ; Carcinoma, Endometrioid ; pathology ; Carcinoma, Small Cell ; pathology ; Carcinoma, Squamous Cell ; pathology ; Carcinosarcoma ; pathology ; Humans ; Immunohistochemistry ; Male ; Prostatic Neoplasms ; classification ; pathology

Basal cell carcinoma (BCC) may exhibit diverse differentiation. In BCC with matrical differentiation, islands of shadow cells, which are characteristic of a pilomatricoma, are located within the tumor. This is an extremely rare variant and to our knowledge, only two review articles and one case report have been published. We recently experienced a case of BCC with matrical differentiation in a 45-year-old Caucasian male. This tumor should be differentially diagnosed from other tumors, particularly a pilomatricoma and pilomatrix carcinoma.
*Arm ; Carcinoma, Basal Cell/*pathology ; Diagnosis, Differential ; Human ; Male ; Middle Aged ; Skin Neoplasms/*pathology

Aged, 80 and over ; Carcinoma, Basal Cell ; pathology ; Female ; Humans ; Nose Neoplasms ; pathology

OBJECTIVETo investigate the histogenesis, clinicopathologic characteristics, pathologic diagnosis, differential diagnosis, treatment and prognosis of basal cell carcinoma of the Prostate (BCCP).

METHODSWe conducted clinicopathologic analysis on the manifestations of 5 cases of BCCP by HE staining and immunohistochemistry and reviewed relevant literature.

RESULTSMicroscopically, the tumor cells were small in volume with ovoid karyomegaly and mitosis, some arranged like a solid nest or with a cribriform appearance. The tumors displayed an invasive growth, with positive expressions of 34betaE12, P63 and Cytokeratin 14, and negative expressions of PSA and P504s. No recurrence and metastasis were found in these patients during over 12 months of follow-up after surgery.

CONCLUSIONBCCP is a rare neoplasm different from prostate adenocarcinoma. Immunohistochemistry is indispensable in distinguishing this tumor from other types of prostatic carcinoma. Its biological behavior remains to be further studied. The best treatment option may be radical surgery combined with chemo-radiotherapy at the present time.

Patients found two years left of the new biology, surface erosion,exudates long. Postoperative pathology examination: inflammatory fibrous background visible uniform small cells arranged in cords, pseudorosette formation region is considered not except basal cell carcinoma , neuroendodrne carcinoma. Diagnosis of immunohistochemical support of basal cell carcinonma.
Carcinoma, Basal Cell ; diagnosis ; pathology ; Humans ; Immunohistochemistry ; Skin Neoplasms ; diagnosis ; pathology

Adult ; Aged ; Carcinoma, Basal Cell ; pathology ; Carcinoma, Papillary ; pathology ; Carcinoma, Squamous Cell ; pathology ; Female ; Humans ; Lacrimal Apparatus Diseases ; pathology ; Male ; Middle Aged ; Nasolacrimal Duct ; pathology ; Young Adult

Superficial epithelioma with sebaceous differentiation (SESD) is a rare benign neoplasm with peculiar histopathologic characteristics, which occurs in aged skin. We report upon a case of SESD occurring on the left upper back, which histopathologically is a superficial, multilobular tumor with numerous basaloid cells mixed with sebaceous cells attached to the overlying epidermis. This case represents a solitary benign neoplasm without any associated malignancy.
Carcinoma, Basal Cell/*pathology ; Female ; Human ; Middle Aged ; Sebaceous Gland Neoplasms/pathology ; Sebaceous Glands/*pathology ; Skin Neoplasms/*pathology

Clear cell basal cell carcinoma (BCC) is a variant of BCC with a characteristic clear cell component that may occupy all or part of the tumor islands. Periodic acid-Schiff (PAS) staining for glycogen is variably positive, and mild deposition of sulfated mucin has been noted. However, to our knowledge, clear cell BCC with sialomucin deposition has not been reported. Here we report a case of clear cell BCC showing sialomucin deposition. The clear tumor cells stained with PAS and showed incomplete diastase-resistance. In addition, mucin staining with alcian blue was positive at pH 2.5 but not at pH 0.5.
Sialomucins/*analysis ; Humans ; Female ; Carcinoma, Basal Cell/classification/diagnosis/*pathology ; Aged, 80 and over

Clear cell basal cell carcinoma (BCC) is a variant of BCC with a characteristic clear cell component that may occupy all or part of the tumor islands. Periodic acid-Schiff (PAS) staining for glycogen is variably positive, and mild deposition of sulfated mucin has been noted. However, to our knowledge, clear cell BCC with sialomucin deposition has not been reported. Here we report a case of clear cell BCC showing sialomucin deposition. The clear tumor cells stained with PAS and showed incomplete diastase-resistance. In addition, mucin staining with alcian blue was positive at pH 2.5 but not at pH 0.5.
Sialomucins/*analysis ; Humans ; Female ; Carcinoma, Basal Cell/classification/diagnosis/*pathology ; Aged, 80 and over

Aged, 80 and over ; Carcinoma, Basal Cell ; pathology ; radiotherapy ; Female ; Head and Neck Neoplasms ; pathology ; radiotherapy ; Humans ; Skin Neoplasms ; pathology ; radiotherapy