23 July 2020: Textbook Updates

We have posted updated reviews of the following topics:

Breast > Fibroepithelial tumors > Phyllodes tumor
by Joshua J.X. Li, M.B.Ch.B., Gary M. Tse, M.B.B.S.
Topic summary: This is a merger of several previous topics. Phyllodes tumors are biphasic fibroepithelial lesions characterized by a leaf-like epithelial pattern. They are graded and prognosticated by histologic changes of the stromal proliferation. By definition, the epithelial component is benign.

Oral cavity & oropharynx > Papillomas > Squamous cell papilloma
by Ivan J. Stojanov, D.M.D., M.M.Sc.
Topic summary: These are common, small (< 1.0 cm), benign intraoral squamoproliferations associated with HPV 6 and 11 in 50% of cases. They commonly involves soft palate, tongue, lips and tonsils.

Ovary tumor > Germ cell tumors > Teratoma-immature
by Aurelia Busca, M.D., Ph.D., Carlos Parra-Herran, M.D.
Topic summary: Malignant germ cell tumor consisting of a teratoma with variable amounts of immature tissue, typically primitive neuroectodermal. Affects mostly young females < 20 years old. Grading is performed based on the amount of immature neuroepithelium. May have associated nodal or peritoneal gliomatosis (presence of mature neural tissue), which increases risk of recurrence.

Penis & scrotum > General > Anatomy & histology-penis
by Diego F. Sanchez, M.D., Antonio L. Cubilla, M.D.
Topic summary: This revised topic has details about the anatomy and numerous histologic images.

Skin nontumor > Dermal non-granulomatous granulocyte-rich reaction patterns > Neutrophilic eccrine hidradenitis
by Jasmine Saleh, M.D., M.P.H., Jodi Speiser, M.D.
Topic summary: Benign, self limiting chemotherapy associated neutrophilic dermatosis characterized by neutrophilic infiltration of eccrine sweat glands. Presents as a polymorphous eruption consisting of variably asymptomatic or tender erythematous to violaceous macules, papules, plaques, nodules and pustules with neutrophils infiltrating and surrounding the eccrine secretory coils in the deeper reticular dermis or subcutaneous fat. Lesions desquamate and usually heal spontaneously within 1 – 3 weeks.

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