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2021 Bone marrow biopsy showed erythroid hyperplasia, increased histiocytes with hemophagocytosis and Factor XIIIa positive histocytic cells. Moderate cytoplasmic staining for ALK 1, consistent with bone marrow involvement of ALK-positive histiocytosis. A subsequent kidney lesion biopsy was also found to have ALK-positive histiocytosis. The patient was then treated with clofarabine.

Patient is 3 years old.

07/2020-Chart indicates patient presented in June with fevers and refusing to walk with pancytopenia, bone marrow biopsy showed no leukemia buthistiocytes. Impression: ALK positive histiocytosis involving BM and kidney.

10/2020 Bone marrow final diagnosis states right and left bone marrow aspirates and biopsies: No morphologic or immunohistochemical evidence of involvement by the patient's previously diagnosed ALK+ histiocytosis (see Comments) - Multiple histiocytic collections with prominent hemosiderin; favor reactive - background normocellular bone marrow with maturing trilineage hematopoiesis.

The patient's prior bone marrow samples are reviewed (9/2020 and 7/2020). Similar to the September bone marrow sample, the current marrow shows numerous histiocyte collections with abundant associated hemosiderin deposition. These histiocytes have a stellate/dendritic appearance and lack the atypical features noted in the patient's marrow at diagnosis, favoring a reactive process. This impression is further supported by the lack of immunoreactivity for either Factor XIIIa or ALK1 among these cells. There is no convincing morphologic or immunohistochemical evidence of marrow involvement by the patient's previously diagnosed ALK+ histiocytosis within the sampled material. Of note, the marrow otherwise appears normocellular for the patient's age, indicative of ongoing marrow recovery post therapy.

It is not clear whether this would be equivalent to Langerhans cell histiocytosis, disseminated (9751/3) as there is not a statement of Langerhans cell or whether this is just histiocytosis, NOS and not reportable.

Patient was diagnosed with lambda myeloma based on the M spike found on serum protein electrophoresis. A bone marrow biopsy was performed, but it was an insufficient sample.

SPEP is not listed in the Hematopoietic Database as a lab test that can be used as a definitive diagnostic method. Since the physician did base the diagnosis on the SPEP result, would it be appropriate to assign code 5 (Positive laboratory test/marker study) since there was no histological confirmation?

Under code 5, the Hematopoietic Manual states: Laboratory tests are listed under Definitive Diagnostic Methods in the Hematopoietic Database.

Rule H6 states: Code 8742/3 (Lentigo maligna melanoma) when the diagnosis is lentigo maligna melanoma with no other histologic types. However, if the diagnosis was strictly lentigo maligna or lentigo maligna melanoma, the first rule that applies is Rule H1 because lentigo maligna melanoma is a single, specific histologic type and Rule H1 states, Code the histology when only one histologic type is identified. Following the current rules, one would never arrive at Rule H6. Should the H Rules be reordered? Or should an example of when one would use Rule H6 be added to clarify when to use this rule?

11/24/20 Adnexal mass, cyst fluid: Positive for malignant cells. Clusters of inhibin-positive, CK7-negative cells, consistent with adult granulosa cell tumor cells. Groups of inhibin-negative, CK7-positive epithelial cells consistent with serous borderline tumor cells. Peritoneal washing: Positive for malignant cells. Small groups of inhibin-positive, CK7-negative cells, consistent with adult granulosa cell tumor cells.

A. Left ovarian mass: Adult granulosa cell tumor (AGCT) of ovary (see note). pTNM Stage: pT1c3 pNX - Serous borderline tumor (SBT) of ovary (see note). pTNM Stage: pT1a pNX. Fallopian tube; unremarkable.

B. Right ovary: - Serous cystadenofibroma of ovary. Fallopian tube; unremarkable.

C. Left pelvic wall nodule: Fibro-calcified nodule, consistent with necrotic appendix epiploica.

D. Uterus (hysterectomy): Uterine leiomyomas. Endosalpingiosis of uterine serosa and paracervical tissue. Atrophic endometrium.

Note: The left ovarian mass is involved by a combined adult granulosa cell tumor and a serous borderline tumor. The AGCT mainly involves the thick-walled cystic area while the SBT the thin-walled cyst/s. The 2 neoplastic elements do, however, demonstrate areas of intimate and close intermingling. From the current literature, it appears that, based on FOXL2 mutation, the AGCT component of combined AGCT and ovarian epithelial tumors is either a true neoplastic processes or an AGCT- like proliferation morphologically indistinguishable from AGCT. To further evaluate the nature of the AGCT component, a FOXL2 analysis is in progress and an addendum will follow.

Details

4/15/2018:  Right abdominal wall mass excision: infiltrating sebaceous carcinoma.  Noted to have a history of Muir-Torre/Lynch syndrome.

1/21/2019:  Two left upper back mass excisions and two lower back (laterality not specified) mass excisions: infiltrating sebaceous carcinomas

8/7/2019:  Excision of multiple sebaceous carcinomas from the right posterior back, left posterior thigh, left anterior abdominal wall, left anterior thigh, right scrotum, right lower abdominal fold, all positive for sebaceous carcinoma on pathology report

9/30/2020:  Right gluteal mass, left gluteal mass, back (NOS) excisions: sebaceous carcinomas.  

10/14/2020:  Right back excision: sebaceous carcinoma. Op note:  History of Lynch syndrome with multiple sebaceous carcinomas, recurrent back mass, site of prior mass resection.

10/18/2021:  Right thigh excision: sebaceous carcinoma

Proposed primaries using MP/H Other Sites Rules

#1:       4/15/2018:  C445-1

#2:       1/21/2019:  C445-2, separate from #1 per M8, same as 1/21/19 C445-9 per M18

#3:       8/7/2019:  C445-1, separate from #1 per M10, separate from #2 per M8

#4:       8/7/2019:  C447-2, separate from #1 & #3 per M8, separate from #2 per M12

#5:       8/7/2019:  C632, separate from #1 per M10, separate from #2-#4 per M11

#6:       9/30/2020:  C445-2, separate from #1 & #3 per M8, separate from #2, #4 & #5 per M10

#7:       9/30/2020:  C445-1, separate from #2, #4 & #6 per M8, separate from #1, #3 & #5 per M10; I do not think the back, NOS (C445-9) is a new primary per M18.

#8:       10/18/2021:  C447-1, separate from #2, #4 & #6 per M8, separate from #1, #3, #5 & #7 per M10

Patient was diagnosed on 01/2020, and primary site on the pathology report is Ampulla of Vater (C241). Synoptic Report states histology as: Intra ampullary papillary-tubular neoplasm in association with microinvasion.

I have reviewed the ICD-O-3 coding table and found histology Intraductal tubulopapillary neoplasm (C25_) code 8503/2. Based on the Matrix principle (Rule F on the ICD-O-3), I will change the behavior to 3 and code as 8503/3. If I look in ICDO-3, Tubulopapillary adenocarcinoma is coded 8263/3.

LI-RADS (liver), PI-RADS (prostate), and TI-RADS (thyroid) can be used to determine reportability. BI-RADS (breast) and Lung-RADS cannot be used to determine reportability. Can these systems below to determine reportability?

C-RADS (from CT colonography)

NI-RADS (head & neck)

O-RADS (ovarian-adnexal)